Question

A lunar vehicle is tested on Earth at a speed of 10 km/h. How fast would it have to be moving on the moon to have the same momentum it had during the test?

Answer 1

Answer:

10km/h

Explanation:

We are given that

Speed of lunar vehicle on Earth,v=10km/h

We have to find the speed of vehicle on moon when it had same momentum on both planet.

Let m be the mass of lunar vehicle and u be the velocity of lunar vehicle on moon

Mass does not vary with position of object on planet.

Therefore, mass of lunar vehicle remains same on earth and moon.

We know that

Momentum of object,P=mv

According to question

$mv=mu$

$v=u$

$u=10km/h$

Hence, the lunar vehicle moving with velocity 10 km/h on moon.