Question

a car and atruck are moving with the same momentum on a straight road if the ratio of the truck is 1:5 and the speed of the car is 90 km / hr then speed of truck is​

Answer 1

Step-by-step explanation:

Correct option is

A

5ms

−1

Given, Speed=18km/h,t=5s

a)The speed of the car in m/s=18×

18

5

=5 m/s

b) The retardation is:

a=

t

v−u

=

5

0−5

=1m/s

2

c) The velocity of the as a funcition of time 2sis:

v(t)=5−t⇒v(t)=5−2=3m/s=10.8 km/h