A car starts with a velocity of 10 m s and accelerates at a rate of 5 m s 2 . Find the final velocity when the car has travelled a distance of 30 m .

We know from the question that, Initial velocity, u = 10 m s Acceleration, a = 5 m s 2 Distance traveled by the car, s = 30 m . Final velocity, v = ? Using the third equation of motion, v 2 = u 2 + 2 a s Substituting the values in the equation, v 2 = 10 2 + 2 × 5 × 30 ⇒ v 2 = 100 + 300 = 400 ⇒ v = 20 m s

E M B I B E

Essentials of PHYSICS Class IX>Chapter 1 - Motion>Practice Problems>Q 15

MEDIUM

9th CBSE

IMPORTANT

Earn 100

A body starting from rest travels with uniform acceleration. If it travels $100 m$ in $5 s$ , what is the value of the acceleration?

Important Questions on Motion

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 1 - Motion>Assignment>Q 1

"The direction in which an object moves is given by the direction of the velocity of the object and not by the direction of the acceleration". Give an example to justify that.