Physics

I need help with these questions make sure they are right and explain further thank you!

Part 1

Question 1 (1 point) Saved Which of the following is a scalar quantity? 248 mL 500 m, up 45 km, north 250 km, west Question 2 (1 point) Which of the following is not a scalar quantity? 110 km/h 10.0 m/s, east 0.20 m 5.0 m/sQuestion 3 (1 point) The sound from a bolt of lightning travelled 4.08 km in 12.0 s. What was the speed of the sound in metres per second? 0.340 m/s 343 m/s 340 m/s 49.0 m/s Question 4 (1 point) A vehicle is travelling 1.0 102 km/h. What is the speed of the vehicle in metres per second? 28 m/s 3.6 102 m/s O 27.8 m/s 1.0 ' 104 m/s Question 5 (2 points) What is the difference between average speed and instantaneous speed?Question 1 (1 point) A driver took 1.5 s to scan the instrument panel. During this time, the car was travelling at a speed of 105 km/h. The distance the car travelled while the driver scanned the panel was O 70 m 73 m O 44 m 49 m Question 2 (1 point) A car is travelling 90 km/h at night. The motorist spots a deer on the road 55 m in front of the car. If the speed and direction of the car remains the same, how long will it take for the car to reach the deer's position? O 2.2 s O 0.80 s O 1.6 s 0.62 sQuestion 3 {1 point} Some vehicles are equipped with high-intensityr discharge (HID) headlights. Some stakeholders have taken the following stance: HID headlights should be banned from use on public roads. 1Which stakeholder would most likely disagree with this point of view? I: :I manufacturers of halogen technology / Is. 3' drivers who mainly travel during daylight hours (1 manufacturers of HID technology C) drivers of vehicles facing HID headlights in oncoming traffic Question 4 {4 points} The use of HID headlights in automobiles involves risks and benets. {2 marks} a. Describe two risks associated with the use ofHID headlights. {2 marks} b. Describe two benets associated with the use of HID headlights. Use this diagram to answer the next two questions. N4+ H 1 cm = 150 m Question 1 (1 point) What is the position of C in terms of A? 900 m, south 1200 m, north 1200 m, south 900 m, northQuestion 2 (1 point) What is the displacement in going from A to C to B? 300 m, south 2100 m, south 300 m, north O 2100 m, north Question 3 (2 points) Match each description with the appropriate term listed. a vector quantity describing the change in position over a specified time 1. average speed a vector quantity describing the length and direction in a straight line from the 2. average velocity starting position to the final position the distance travelled over a specified 3. displacement time 4. vector a quantity consisting of magnitude and directionQuestion 4 (1 point) Within the Gaetz Lake Sanctuary in Red Deer, Alberta, is a looped trail that is 4 km long. Suppose a person walked all the way around the looped trail in 1 h, ending where he or she started. Which statement best describes this person's motion over this time interval? O The person moved with an average speed of 4 km/h and an average velocity of 0. O The person moved with an average speed of 4 km/h and an average velocity of +4 km/h. O The person moved with an average speed of -4 km/h and an average velocity of -4 km/h. O The person moved with an average speed of 0 and an average velocity of +4 km/h.Use this diagram of a Rocky Mountain Adventure to answer the next two questions. Question 5 (1 point) Beni goes south from John Creek crossing to Kaleigh Creek crossing. If he moves 4.7 km, the displacement from John Creek crossing to Kaleigh Creek crossing is 4.7 km, north 4.7 km, south 4.7 km, east 4.7 km Question 6 (1 point) Beni travelled from base camp to Scalzo Creek crossing. Then Beni reversed his direction and travelled to John Creek crossing. The distance from base camp to Scalzo Creek crossing is 6.0 km and the distance from base camp to John Creek crossing is 5.0 km. If Beni took 5.0 h to complete this journey, his average velocity was 1.0 km/h, north 1.0 km/h, south O 3.4 km/h, north 3.4 km/h, southQuestion 3' [1 point) A. car travels -96 kma'h for 30 min. The resulting displacement of the vehicle is C) +48 km (:3: -48 km Question 8 [1 point) In adding two vectors :1 and v2 a student used the head-to-tail method. The student first drew v1 and then drew v2 starting from the head of v1. The resultant vector should be drawn from f) the tail of v2 to the head of v1 ("j the head of v1 to the tail of v2 ("J the head of v2 to the tail of v1 K\". the tail of v1 to the head of v2 '\\._./ Question 9 [2 points) For many journeys1 the magnitude of the average velocity is less than the average speed. Describe a situation where this relationship is true