MEDIUM LEVEL FORCE AND MOTION QS

A car’s speed is decreasing 10 m/s every second. If it starts at 100 m/s, how long does it take to stop?

• 5 seconds
• 10 seconds
• 100 seconds
• 1 second

If a runner increases speed from 5 m/s to 15 m/s in 2 seconds, what is the acceleration?

• 2.5 m/s²
• 5 m/s²
• 15 m/s²
• 20 m/s²

A car moves at 72 km/h. What is the speed in m/s?

• 18 m/s
• 20 m/s
• 25 m/s
• 10 m/s

A push of 20 N is applied to the left, and another push of 30 N is applied to the right. What is the net force?

• 10 N right
• 50 N left
• 30 N left
• 10 N left

A ball is thrown upward with a speed of 20 m/s. What happens to its speed after 1 second? (Assume g = 10 m/s²)

• 10 m/s
• 15 m/s
• 20 m/s
• 5 m/s

If an object moves with constant speed in a straight line, which statement is correct?

• It is accelerating
• It is decelerating
• It has zero acceleration
• It is speeding up

What is the acceleration of an object that changes speed from 40 m/s to 20 m/s in 2 seconds?

• 20 m/s²
• 10 m/s²
• −10 m/s²
• −5 m/s²

Which condition results in the object remaining stationary?

• Forces are unbalanced
• No force is acting
• Forces are balanced
• It keeps moving faster

Two people push a box: one with 50 N to the right, another with 50 N to the left. What happens to the box?

• It moves to the right
• It moves to the left
• It stays still
• It jumps upward

A cyclist covers 600 meters in 30 seconds. What is the speed?

• 10 m/s
• 20 m/s
• 30 m/s
• 40 m/s