Question

A car is travelling at 20 m/s before slowing down to a velocity of 5 m/s. Calculate the change in velocity of the car. Change in velocity =
The driver of the car has a mass of 60 kg. Recall an equation and calculate the change in momentum of the driver.
Formula: Change in momentum = …………..
The car slowed down for 6 s. Calculate the force acting on the driver (impulse equation). State the unit.
Formule
Force,
Write two examples of momentum in our daily life activities.

Answer 1

Answer:

change in momentum =150 kg m/s^2

Examples of daily life :

1) A car moving with huge mass and velocity slows down before traffic signal .

2) A ball moving with a constant mass slows down due to a speed breaker in between the path of it.

Explanation:

Let initial velocity be 20 m/s and final velocity be 5 m/s.Mass given is 60 Kg and time given is 6s.

Formula of change in momentum =( (initial velocity -final velocity) *mass) /time

So by putting the values in the formula we get

Change in momentum=((20-5)m*60Kg)/6s*s

=(15m *60 Kg) /6s*s

On solving we will get 150 Kg m /s^2