If Hannah slows down from a speed of 12 m/s to 8 m/s and has a mass of 45kg, how much force has been exerted on her to cause this deceleration?
Since force = mass x acceleration, acceleration = 4 as the change in velocity is 4 m/s and m = 45 as the mass of Hannah is 45 kg and hence the force required to be exerted on her is 4*45 which is 180N.
MA
Related Physics GCSE answers
All answers ▸If an object of mass 6kg was dropped from a height 35m (initially at rest), how long would it take to reach the ground under free fall?
Why does increasing the temperature of a gas increase the pressure (when the volume is fixed)?
What is the difference between acceleration, speed and velocity?
What is the Rutherford alpha scattering experiment and what does it tell us?