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Ice Skating!
A figure skater encounters a rough patch. Calculate the length of ice that should be resurfaced.
Pole Vault!
The Olympic record for the pole vault event is 6.03 m, set by Thiago Braz (75 kg) in 2016. Calculate the minimum speed at which Thiago must have run just before vaulting over the beam and thereby breaking the Olympic record.
Car Crash!
Two cars collide. Calculate the coefficient of friction between the car and the road.
Free Kick!
Calculate the force due to air resistance acting on the soccer ball as it soars through the air.
Machine’s Work!
Calculate the work done by the machine between different points
Pinball Wizard
Calculate the spring constant and the speed of the pinball just after pulling the plunger.
Pushing a Toy Car!
Find the work done on the toy car.
Raindrops Keep Falling on my Head!
Calculate the speed of a raindrop just before hitting the ground
Water Fountain!
Enough power to "lift up 1 meter a 1 Ton anvil, in half a second".
Cargo Plane!
Calculate the percentage of the cargo mass that needs to leave the plane for takeoff.
One WTC Tower!
Calculate the percentage of mechanical energy the ball loses each time it bounces.
Celebrating a Soccer Goal
A soccer player celebrates a goal by falling to his knees and sliding across the ground. If the mass [...]
Emergency Escape!
Calculate the minimum height of an emergency escape ramp to safely divert a truck with faulty brakes.