Question

A car is moving with uniform velocity of 30m/s. It is stopped in 2secs by applying a force of 1500N through its breaks. Calculate a) change in momentum of car b) retardation produced in car c) mass of car

Answer 1

Answer:

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Explanation:

Solution

verified

Correct option is

D

100 kg, 15 m s  

−2

 

As we know that F=  

t

mv

​

 

where p = momentum

so 1500=  

2

m×30

​

 

mass (m)=100 kg

also force(F) = mass×acceleration

a =  

100

1500

​

=15 m/s  

2