1-If you are driving and slam on your brake, why does your body jerk forward?A i

Question

1-If you are driving and slam on your brake, why does your body jerk forward?A it's a reflex reaction from being startled B due to Newton's first law of motion (inertia) C because of Kepler's second law (equal areas) D due to the force of gravity

2 What determines the force of gravity between two bodies?

the force of gravity is constant, so it doesn't depend on any variables

both of their masses and the distance between them

the density of the larger body

the mass of the larger body

the force of gravity is constant, so it doesn't depend on any variables

both of their masses and the distance between them

the density of the larger body

the mass of the larger body

Explanation / Answer

1.

Correct answer is (B) due to newton’s first law of motion

Newton’s first law of motion says that a body will continue its inertia in absence of external force.

I.e. a body at rest will try to keep in rest while a body moving with constant velocity will try to move with that velocity.

In moving forward with some velocity , when we apply brake then car stops but our body has an inertia of moving forward so our body will try to move forward we will feel a jurk.

2.

Force of gravity between two masses M and m , kept at R seperation is given by-

F = GMm/R2 , here G is a constant

So correct answer is (B) both of the masses and distance between them.

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