Author Question: When you sit in a chair there is necessarily a reaction force to the gravitational force acting on ... (Read 129 times)

gbarreiro · **on:** Jul 28, 2018

When you sit in a chair there is necessarily a reaction force to the gravitational force acting on your body. Which of the following best describes this reaction force?
1.the force of gravity you exert on the Earth
2.the force you exert downward on the seat of the chair
3.the normal force exerted by the chair onto you
4.none of these forces

Question 2

A race car moving quickly around a track collides with a mosquito, which splatters on the car's windshield. Which object experiences a greater magnitude acceleration?
1.Both experience the same acceleration.
2.the race car
3.the mosquito
4.One cannot tell, you need to know the speeds of the mosquito and the race car.