PHYS - Questions on Momentum
Physics, momentum - IBDP | DSE | GCE | IAL | AP Physics
Concepts you need to remember for IGCSE Physics:
A raindrop of mass 0.000035kg falls to the group. The speed of the raindrop as it hits the ground is 8.8m/s. Calculate the momentum of the raindrop as it hits the ground.
momentum = 0.000035 x 8.8 = 3.08 x 10-4 kg·m/s
A boy of mass 43.2kg runs and jumps onto a stationary skateboard. The boy lands on the skateboard with a horizontal velocity of 4.10m/s. The skateboard has a mass of 2.50kg. Using ideas about conservation of momentum, calculate the combined velocity of the boy and skateboard just after the boy lands on it
The boy holds a heavy ball as he stands on a stationary skateboard. The boy throws the ball forwards while still standing on the skateboard. Explain what happens to the boy and the skateboard.
A car travels at 20m/s. The mass of the car is 1500kg.
(a) Calculate the momentum of the car.
momentum = 1500 x 20 = 3.0 x 104 kg·m/s
(b) The car crashes into a wall and stops in 0.14s. Calculate the average force on the car during the crash.
force = 3.0 x 104 / 0.14 = 2.1 x 105 N
An ice skater wears soft knee pads that compress easily. Explain how the pads protect her knees when she falls on the ice.
Wanna Boost Up Your IGCSE Physics?
We just sent you an email. Please click the link in the email to confirm your subscription!