SSC
PHYSICS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
the Impulse on the car hitting the wall is greater
|
|
|
the change in momentum of the car hitting the wall is greater
|
|
|
the force on the car hitting the hay stack is greater
|
|
|
the collision time of the car hitting the hay stack is greater
|
Detailed explanation-1: -the change in momentum of the car hitting the wall is greater. the force on the car hitting the hay stack is greater. the collision time of the car hitting the hay stack is greater. increase impact force.
Detailed explanation-2: -The impulse from the wall will be the same as the haystack. Why is it safer for you to drive into a pile of hay instead of a brick wall? Driving into the hay makes the impulse take more time. More time, less force needed.
Detailed explanation-3: -These forces are known as action and reaction forces, and they are described by Newton’s third law of motion. The force exerted by the wall on the car is known as the action force, and it will cause the car to accelerate in the opposite direction of the motion, or, in other words, it will try to stop the car.