23. A passenger elevator travels from the first floor to the 60th floor, a distance of 210m, in 35s. What is the elevator’s speed?
24. A motorcycle is moving at a constant speed of 40km/h. How long does it take the motorcycle to travel a distance of 10km?
25. How far does a car travel n 0.75h if it is moving at a constant speed of 88km/h?
26. A long-distance runner is running at a constant speed of 5m/s. How long does it take the runner to travel 1 km?
27. Michiko walked a distance of 1.60km in 30min. Find her average speed in m/s.
28. A car travels at a constant speed of 30.0m/s for 0.80h. Find the total distance traveled in
km.
29. What is the momentum of a car with a mass of 1300 kg traveling north at a speed of
28m/s?
30. A baseball has a momentum of 60kg*m/s south and a mass of 0.15kg. What is the
baseball’s velocity?
31. FInd the mass of a person walking west at a speed of 0.8 m/s with a momentum of
52.0kg *m/s west.
32.The mass of a basketball is three times greater than the mass of a softball. Compare the momentums of a softball, and a basketball, if they both are moving at the same velocity.
33. What is the momentum of a 100kg football player running north at a speed of 4m/s?
34. Compare the momentums of a 6,300kg elephant walking 0.11m/s and a 50kg dolphin
swimming 10.4m/s.
35. An airplane starts at rest and accelerates down the runway for 20s. At the end of the runway, its velocity is 80m/s north. What is its acceleration?
36. A cyclist starts at rest, and accelerates at 0.5 m/s south for 20s. What is the cyclist’s
final velocity if Vf = A·t + Vi?
37. A ball is dropped and falls with an acceleration of 9.8m/s downward. It hits the ground
2 with a velocity of 49 m/s downward. How long did it take the ball to fall to the ground if
t = (V - V )/A?
38. Determine the change in velocity of a car that starts at rest and has a final velocity of 20 m/s north.
39. A ball is dropped from a cliff and has an acceleration of 9.8m/s . How long will it take the ball to reach a speed of 24.5m/s?
40. A sprinter leaves the starting blocks with an acceleration of 4.5m/s . What is the sprinters speed 2s later?
(Find the Distance and Displacement for #41-48)
41. 8ft left ← 9ft right →
42. 10mi north ↑ 10 mi north ↑
43. 20yd west ← 10yd east → 10yd east →
44. 5km northwest ↖ 10km southeast ↘ 20km northwest↖
45. 20mi north ↑ 20 mi north↑
46. 10yd west ← 5yd east → 5yd east →
47. 20km northwest ↖ 10km southeast ↘ 5km northwest ↖
48. 5cm South ↓ 10cm North ↑ 15cm South ↓ 20cm North ↑
49. An object has a distance of 10yd and a displacement of 1yd west. What are the possible lengths of the two vectors?
50. A person went on their morning jog from their home a total distance of 1mi. They had a displacement of 0mi. How far did they run before they stopped and turned around?
