21. An object is moving with a constant velocity of 5 m/s. What is its acceleration?
a) 0 m/s^2
b) 5 m/s^2
c) -5 m/s^2
d) It cannot be determined without additional information
22. The slope of a distance-time graph represents:
a) Speed
b) Velocity
c) Acceleration
d) Displacement
23. A car is initially moving at a speed of 10 m/s. It accelerates uniformly and reaches a speed of 30 m/s in 5 seconds. What is its acceleration?
a) 8 m/s^2
b) 4 m/s^2
c) 6 m/s^2
d) 2 m/s^2
24. Which of the following is the correct equation for calculating speed?
a) v = s/t
b) v = u + at
c) v = (u + v)/2
d) v = s – u
25. A car is traveling at a speed of 30 m/s. How long will it take to travel a distance of 150 meters?
a) 5 seconds
b) 10 seconds
c) 15 seconds
d) 20 seconds
