What is the definition of velocity?
a) The speed of an object in a straight line.
b) The speed of an object in a specific direction.
c) The distance traveled by an object.
d) The rate of change of an object's speed.
Which of the following is an example of acceleration?*
a) A car moving at a constant speed of 60 km/h.
b) A skateboarder speeding up from 0 to 10 m/s.
c) A ball rolling on a flat surface at a steady speed.
d) A plane flying at a constant altitude.
What does the slope of a velocity vs. time graph represent?
a) Distance.
b) Speed.
c) Acceleration.
d) Time.
A 5 kg object is pushed with a force of 20 N. What is its acceleration?
a) 4 m/s²
b) 5 m/s²
c) 2 m/s²
d) 10 m/s²