Essentials of PHYSICS Class IX>Chapter 1 - Motion>Practice Problems>Q 10

EASY

9th CBSE

IMPORTANT

Earn 100

An electric train is moving with a velocity of $120 {kmh}^{- 1}$ . How much distance will it cover in $30 s$ ?

Important Questions on Motion

EASY

9th CBSE

IMPORTANT

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

A bus decreases its speed from

80 km / h

to

50 km / h

in

4 s

. Find the acceleration of the bus.

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 1 - Motion>Practice Problems>Q 2

A marble rolling on a smooth floor has an initial velocity of

0.4 m / s

. If the floor offers retardation of

0.02 m / s^{2}

, calculate the time it will take to come to rest.

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 1 - Motion>Practice Problems>Q 3

A bus accelerates uniformly from $54 km / h$ to $72 km / h$ in $10 s$ . Calculate the acceleration.

MEDIUM

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 1 - Motion>Practice Problems>Q 3

A bus accelerated uniformly from

54 km / h

to

72 km / h

in

10 s

. Calculate the distance covered by the bus in that time.

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 1 - Motion>Practice Problems>Q 4

Starting from a stationary position, Rehan paddles his bicycle to attain a velocity of

6 m / s

in

30 s

. The he applies brakes such that the velocity of bicycle comes down to

4 m / s

in the next

5 s

. Calculate the acceleration of the bicycle in both cases.

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 1 - Motion>Practice Problems>Q 5

The brakes applied to a car produce an acceleration of

{6 m/s}^{2}

in the opposite direction of motion. If the car takes two seconds to stop after the application of brakes, calculate the distance it traveled during this time.

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 1 - Motion>Practice Problems>Q 6

A body moving with a speed of

5 m/s

is subjected to an acceleration of

{20 m/s}^{2}

. Calculate the speed of the body after

10

seconds.

EASY

9th CBSE

IMPORTANT

Essentials of PHYSICS Class IX>Chapter 1 - Motion>Practice Problems>Q 7

A car starting from rest attains a velocity of $60 km/h$ in $1 minute$ . Calculate its

(i) average velocity

(ii) acceleration

(iii) distance traveled during the first $1 minute$ .