Grade 12 Physical Sciences | Fun Learning Quest for Kids

You're driving at 120 km/h and suddenly slam on the brakes to avoid a taxi. Using Newton's First Law, explain why your coffee cup, which was resting on the dashboard, flies forward.

A 70 kg rugby player running at 5 m/s tackles a stationary opponent. If the collision lasts 0.2 s and the player comes to rest, what is the magnitude of the average force exerted on the player during the tackle? Use the impulse-momentum theorem.

A 0.5 kg soccer ball is kicked from rest to 20 m/s. Using the work-energy theorem, how much work is done on the ball by the foot? Ignore air resistance.