Physics Quiz: Motion & Forces

A car accelerates uniformly from rest to a speed of 20 m/s in 5 seconds. What is the acceleration of the car?

• 2 m/s²

• 4 m/s²

• 5 m/s²

• 10 m/s²

• 5 units

• 7.1 units

• 10 units

• 25 units

According to Newton's first law, an object will remain at rest or in uniform motion unless acted upon by a(n):

• Balanced force

• Unbalanced force

• Gravitational force

• Frictional force

A 2 kg ball moving at 3 m/s collides with a stationary 1 kg ball. If the 2 kg ball comes to rest after the collision, what is the velocity of the 1 kg ball?

• 1 m/s

• 2 m/s

• 3 m/s

• 6 m/s

• 49 N

• 85 N

• 98 N

• 196 N

A car travels 100 km north and then 100 km east. What is the magnitude of the displacement of the car?

• 100 km

• 140 km

• 200 km

• 300 km

A force of 10 N is applied to a 2 kg object. What is the acceleration of the object?

• 2 m/s²

• 5 m/s²

• 10 m/s²

• 20 m/s²

A 0.5 kg ball is thrown with a velocity of 10 m/s. What is its momentum?

• 2.5 kg·m/s

• 5 kg·m/s

• 10 kg·m/s

• 20 kg·m/s

A 4 kg object moving at 3 m/s collides with a 2 kg object moving at 1 m/s in the opposite direction. What is the total momentum of the system before the collision?

• 10 kg·m/s

• 8 kg·m/s

• 6 kg·m/s

• 14 kg·m/s

• 4.9 m/s²

• 6.9 m/s²

• 7.8 m/s²

• 9.8 m/s²