Question

A car starts with an initial velocity of 10 m/s and accelartes at a rate of 5ms-2.find the final velocity when the car has travelled a distance of 30 m .what time has been taken by the car for this motion

Answer 1

initial velocity of a car is 10 metre per second

Distance taken by car is 30 metre

accleration =5meter per second square .

Formula to find final velocity

V^2= U^2+2as(:u is initial velocity and v is final velocity and s is displacement and a is accleration.)

So:

V^2= (10)^2+2x5x30 after calculating we get.

V^2=400=20 is final velocity.

time taken:

by formula V=U+at

20= 10+5xt then after calculating:

we get

5t=10. t= 2sec time taken.

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