Question

please answer these 5 questions .. I will be thankful to you

Answer 1

1. By the help of cushion the action reaction less affect on the leg of athlete's leg because by the help of cushion the leg come very slowly on the land and then it does not affect on his leg.
2. It is because of the law of inertia, luggage is it in the motion and it want to maintain its state so if it will not tie then it fall down when the brake will apply.
3. In first case-
m=1kg
a=10m/s^2
F=ma
= 1×10
=10 N
in second case-
m=2kg
a=4m/s^2
F=ma
=2×4
=8N
in first case the force will be greater.
4. It is because of the force of friction.
4. The force is balance in the pan so force is 0 because it does not depend on the mass.