1. Convert 50 mi/hr to its equivalent in m/s
2. A car moving with an initial velocity of 28 m/s slows down at a constant rate of -3 m/s².
   1. What is its velocity after 4 seconds of deceleration?
   2. What distance does the care cover in this time?
3. A traveler covers a distance of 460 miles in a time of 8 hours. What is the average speed for this trip? 57.5
4. A student releases a rock at rest from the top of a 40-m tower. If g=9.8 m/s² , what is the speed of the rock as it hits the ground in m/s?
   1. 28 b. 30 c. 56 d. 784
5. An object starts from rest and accelerates at 10 m/s² for the entire distance of 400 m. what is the velocity of the object at the end of the run in m/s?
   1. 45 b. 89 c. 130 d. 180
6. A ball is released at rest from the top of the Washington monument. It hits the ground after falling 6 s. what was the height from which the ball was dropped?
7. What is a projectile motion?
8. A 10-kg mass and 2-kg mass are connected by a light string over a massless, frictionless pulley. What is the acceleration of the system when released? (remember your atwood lab formula)
   1. 2.5 m/s² b. 6.5 m/s² c. 7.8 m/s² d. 9.8 m/s²
9. State Newton's laws of motion
10. What is the S.I unit of force?
11. Two forces, one of 50 N and the other of 30 N, act in opposite directions on a box. What is the mass of the box if its acceleration is 4 m/s²?
12. What is the weight of a 40-kg mass?
13. What is the mass of a 196 N weight?