* Mt. SAC LEAD Program | Topic: I made a couple changes x 2ag HCHW Ch 2 (31) (1).pdf * WA ZAG HW Ch 2 (17) - Physics Zac X New Tab x 1 + webassign.net/web/Student/Assignment-Responses/last?dep=34175239 1. [-/3 Points] DETAILS WEBASSIGNALGPHYS1 2.1.001. MY NOTES A truck travels due east for a distance of 1 n, turns around and goes due west for 6.6 km, and finally turns around again and travels 2.7 km due east. (a) What is the total distance, in kilometers, that the truck travels? km (b) What are the magnitude (in km) and direction of the truck's displacement? magnitude km direction -Select- Supporting Materials Physical Constants Submit Answer 2. [-/2 Points] DETAILS WEBASSIGNALGPHYS1 2. 1.002. MY NOTES Find the following (in m) for the path in the figure below. 12 x ( m) (a) the total distance traveled (b) the displacement from start to finish m Supporting Materials Physical Constants Activate Wir Go to Settings to Type here to search SAMSUNG* Mt. SAC LEAD Program x w Topic | made a couple changes x 2ag HCHW Ch 2 (31) (1).pdf X A ZAG HW Ch 2 (17) - Physics Zag X New Tab - C webassign.net/web/Student/Assignment-Responses/last?dep=34175239 3. [-/2 Points] DETAILS WEBASSIGNALGPHYS1 2.1.003. MY NOTES ASK YOUR TEACHER Two soccer players kick a soccer ball back and forth along a straight line. The first player kicks the ball 15 m to the right to the second player. The second player kicks the ball to the left weakly; it only moves 1.7 m before stopping. (Consider the right to be the positive direction. Where applicable, indicate the direction with the sign of your answer. All distances are in meters.) (a) What is the total distance that the ball moved? m (b) At the end, what is the displacement of the ball (from the first player)? m Supporting Materials Physical Constants Submit Answer 4. [-/2 Points] DETAILS WEBASSIGNALGPHYS1 2.4.001. MY NOTES ASK YOUR TEACHER Influenced by the gravitational pull of a distant star, the velocity of an asteroid changes from from +20.2 km/s to -19 km/s over a period of 1.91 years. (a) What is the total change in the asteroid's velocity? (Indicate the direction with the sign of your answer. Give your answer in m/s.) m/s b) What is the asteroid's average acceleration during this interval? (Indicate the direction with the sign of your answer. Give your answer in m/s.) m/s Supporting Materials Physical Constants Submit Answer Activate Window 5. [-/1 Points] DETAILS WEBASSIGNALGPHYS1 2.4.002. MY NOTES ASK YOUR TEACHER A jetliner goes from rest to a takeoff speed of 187 mi/h in 37.2 s. What is the magnitude of its average acceleration in m/s?? Type here to search SAMSUNGMt SAC LEAD Program * * Topic: | made a couple changes x | 2ag HCHW Ch 2 (31) (1).pdf * WA ZAG HW Ch 2 (17) - Physics 2a X New Tab X + + C webassign.net/web/Student/Assignment-Responses/last?dep=34175239 5. [-/1 Points] DETAILS WEBASSIGNALGPHYS1 2.4.002. MY NOTES ASK YOUR TEACHER A jetliner goes from rest to a takeoff speed of 187 mi/h in 37.2 s. What is the magnitude of its average acceleration in m/s? m/s2 Supporting Materials Physical Constants Submit Answer 6. [-/3 Points] DETAILS WEBASSIGNALGPHYS1 2.5.001.TUTORIAL. MY NOTES ASK YOUR TEACHER A remote controlled toy car starts from rest and begins to accelerate in a straight line. The figure below represents "snapshots" of the car's position at equal 0.5 s time intervals. (Assume the positive direction is to the right. Indicate the direction with the sign of your answer. ) =0s 1=0.5s 1=1.0s = 1.5 s =2.0s O O O 0m 0.1 m 0.4 m 0.9 m 16 m (a) What is the car's average velocity (in m/s) in the interval between t = 0.5 s to t = 1.0 s? m/s (b) Using data from t = 0.5 s to t = 1.5 s, what is the car's acceleration (in m/s2) at t = 1.0 s? m/s (c) Is the car's speed increasing or decreasing with time? O increasing O decreasing constant O not enough information Supporting Materials Activate Windows Go to Settings to activate Windows Physical Constants Additional Materials Type here to search SAMSUNGStarting from rest, a truck travels in a straight line for 7.0 s with a uniform acceleration of +1.8 m/s2. The driver then applies the brakes for 2.0 s, causing a uniform acceleration of -3.0 m/s2 over that time. (a) What is the truck's speed (in m/s) at the end of the braking period? m/s (b) What is the total distance traveled by the truck in meters (from the point where it started at rest to the end of the braking period)? Supporting Materials Physical Constants Submit Answer B. [-/4 Points] DETAILS WEBASSIGNALGPHYS1 2.8.003. MY NOTES ASK YOUR TEACHER A child operates a remote controlled toy car on a linear track. The figure below plots the car's position as a function of time. x (m) t ( 5 ) Find the velocity (in m/s) of the toy car over the following time intervals. Indicate the direction with the sign of your answer. (a) from 0 s to 2 s m/s (b) from 2 s to 4 s m/s (c) from 4 s to 6 s m/s Activate Windows Go to Settings to activate Windows (d) from 6 s to 9 s m/sSubmit Answer 9. [-/13 Points] DETAILS WEBASSIGNALGPHYS1 2.8.004. A particle is restricted to move along one dimension, the x-axis. The graph below plots the velocity of the particle as a function of time. MY NOTES ASK YOU v (m/s) (a) What is the acceleration (in m/s2) of the particle during the following intervals? Indicate the direction with the sign of your answer. O s to 2 s m / s 2 s to 4 s m/s2 4 s to 5 s m/s2 5 s to 9 s m / s 2 9 s to 10 s m/s 2 10 s to 12 s m/s (b) At the following instants in time, what is the direction of the particle's velocity? t = 1.0 s -Select- t = 3.0 s ---Select- t = 6.0 s --Select- t = 8.0 s -Select- t = 8.5 s -Select- t = 9.5 s --Select- t = 11.0 s --Select- Supporting Materials Physical Constants Activate Windows Submit Answer oy to Senings to whomite win DETAILS HRW10 2 MY NOTES ASK YOUR TEt = 9.5 s - Select- t = 11.0 s --Select- Supporting Materials Physical Constants Submit Answer 10. [-/2 Points] DETAILS HRW10 2.P.046. MY NOTES ASK Raindrops fall 1706 m from a cloud to the ground. (a) If they were not slowed by air resistance, how fast would the drops be moving when they struck the ground? m/s b) Would it be safe to walk outside during a rainstorm? Yes NO Additional Materials Algebra-Squareroots & Squares Submit Answer 11. [-/1 Points] DETAILS HRW10 2.P.053.SSM. MY NOTES ASK YO A key falls from a bridge that is 54 m above the water. It falls directly into a model boat, moving with constant velocity, that was 10 m from the point of impact when the key was released. What is the speed of the boat? m/s Submit Answer 12. [-/3 Points] DETAILS OSUNIPHYS1 3.2.P.034. MY NOTES ASK YOU An object has a position function x(t) = 3t m. (a) What is the velocity (in m/s) as a function of time? (Use the following as necessary: t.) v(t ) = m /s Activate Windows Go to Settings to activate V (b) Graph the position function. x (t) (m) x (t) (m) x (t) (m) (t) (m)Submit Answer 12. [-/3 Points] DETAILS OSUNIPHYS1 3.2.P.034. MY NOTES ASK YOUR TEACHER An object has a position function x(t) = 3t m. (a) What is the velocity (in m/s) as a function of time? (Use the following as necessary: t.) v ( t ) = m /s (b) Graph the position function. x (t) (m) x (t) (m) x (t) (m) 10 10 10 10 O ( s ) O Graph the velocity function. v (t) (m/s) v (t) (m/s) v (t) (m/s) v (t) (m/s) 10 10/ 10 10 2 Activate Windows 10 10 t ( 5 ) (s) Settings to activate Windows.13. [-/6 Points] DETAILS HRW10 2.P.015.GO. MY NOTES ASK YOUR TEACHER A particle's position is given by x = 2 - 11t + 2t (where t is in seconds and x is in meters). (a) What is its velocity at t = 1 s? (Indicate the direction with the sign of your answer.) m/s b) Is it moving in the positive or negative direction of x just then? positive O negative neither (c) What is its speed just then? m/s d) Is the speed increasing or decreasing just then? increasing decreasing O neither (Try answering the next two questions without further calculation.) (e) Is there ever an instant when the velocity is zero? If so, give the time t; if not, enter NONE. (f) Is there a time after t = 3.8 s when the particle is moving in the negative direction of x? If so, give the time t; if not, enter NONE. S GO Tutorial Submit Answer 14. [-/2 Points] DETAILS OSUNIPHYS1 3.1.P.027. MY NOTES ASK YOUR TEACHER The position of a particle moving along the x-axis is given by x(t) = 4.2 - 2.5t m. (Assume t is in seconds.) (a) At what time (in s) does the particle cross the origin? (b) What is the displacement (in m) of the particle between t = 3.2 s and t = 6.4 s? (Indicate the direction with the sign of your answer.) Activate Windows Go to Settings to activate Windows m15. [-/3 Points] DETAILS GRRPHYS2 2.P.038. MY NOTES ASK YOUR TEACHER You are driving your car along a country road at a speed of 26.0 m/S. As you come over the crest of a hill, you notice a farm tractor 25 m ahead of you on the road, moving in the same direction as you at a speed of 11.0 m/s. You immediately slam on your brakes and Yes slow down with a constant acceleration of magnitude 7 m/s2. Will you hit the tractor before you stop? O No How far will you travel before you stop or collide with the tractor? m m If you stop, how far is the tractor in front of you when you finally stop? (If you instead collide, enter 0 below.) Submit Answer 16. [-/3 Points] DETAILS HRW10 2.P.026. MY NOTES ASK YOUR TEACHER A muon (an elementary particle) enters a region with a speed of 4.55 x 105 m/s and then is slowed at the rate of 1.10 x 1014 m/s2. (a) How far does the muon take to stop? m (b) Graph x versus t for the muon. x (m) x (m) 0.10 0.10 0.08 0.08 0.06 0.06 0.04 0.04 0.02 0.02 10 20 30 40 O 10 20 30 t (ns ) x (m) x (m) 0.10 0.10 0.08 0.08 0.06 0.06 0.04 0.04 Activate Windows 0.02 0.02 Go to Settings to activate Windows . Last saved Saturday, March 9, 2024 at 12:37 AM X SAMSUNGO 20 30 40 (ns) O 10 Graph v versus t for the muon. 20 30 an (ns ) v (m/s) 5x 10 v (m/s) 4x 106 5x105 3x 10 4x 106 2x10 3x 10 1x10 2x10 1 x 106 O 10 20 30 40 (ns) O 10 20 30 40 v (m/s) 5x10' v (m/s) 4x106 5x 106 3x 10 4 x10 2x 10 3x 10 1 x 106 2x 10 x 106 O 10 20 30 t (ns) 40 O 10 20 30 go t (ns ) Additional Materials Algebra-Squareroots & Squares Submit Answer Viewing Saved Work Revert to Last Response 17. [-/2 Points] DETAILS SERPSE9 2.P.048.WI. A baseball is hit so that it travels straight upward after being struck by the bat. A fan observes that it takes 2.90 s for the ball to reach its maximum height. MY NOTES (a) Find the ball's initial velocity. ASK YOUR TEACHER m/s upward (b) Find the height it reaches. m Need Help? Watch It Submit Answer Activate Windows Go to Settings to activate Windows