Question

If a truck has a mass 10 times greater than a car, how fast will the car have to move to have the same momentum as the truck when it moves

Answer 1

i.e truch weighs 500 lbs so the car weighs 50lbs. lets say thw truck goes 2 mph so thatll be 1000 for the car to reach 1000 you have to divide and youll get 20. so the car has to be ten times as fast as the truck

Answer 2

The car will have to move 10 times greater than the truck

Explanation:

Let x be the mass of car

Mass of truck=10x

We have to find how fast the car will have to move to have the same momentum as the truck when it moves.

We know that momentum=
`mass* velocity`

Momentum of car=
`x* v_1`

Where
`v_1`=velocity of car

Momentum of truck=
`10x* v_2`

Where
`v_2`=Velocity of truck

According to question

`10x* v_2=x* v_1`

`v_1=10v_2`

Hence, the car will have to move 10 times greater than the truck when both have same momentum