A car accelerates uniformly on a straight road from rest to a speed of 180 k m h - 1 in 25 s . Find the distance covered by the car in this time interval.

In the given question, Initial velocity ( u ) = 0 Final velocity ( v ) = 180 k m h - 1 = 50 m s - 1 and Time ( t ) = 25 s Since, a = v - u t = 50 - 0 25 = 2 m s - 2 We know that, s = u t + 1 2 a t 2 Thus, s = 0 × 25 + 1 2 × 2 × ( 25 ) 2 = 625 m .

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11th ICSE

IMPORTANT

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The figure below shows the time-acceleration graph of a body. Draw the corresponding time- velocity graph. At time $t = 0$ , the velocity, $v = 0$ .

Important Questions on Motion in One and Two Dimensions

MEDIUM

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 8 - Motion in One and Two Dimensions>NUMERICALS>Q 11

A car accelerates uniformly on a straight road from rest to a speed of

180 k m h^{- 1}

25 s

. Find the distance covered by the car in this time interval.

MEDIUM

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 8 - Motion in One and Two Dimensions>NUMERICALS>Q 12

A ball is thrown vertically upwards from the top of a tower with a velocity of

20 m s^{- 1}

. The ball strikes the earth after

5 s

of its throwing. What is the height of the tower? What will be the velocity of the ball while striking the earth?

HARD

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IMPORTANT

ISC Physics Class XI Part 1>Chapter 8 - Motion in One and Two Dimensions>NUMERICALS>Q 13

A ball which is thrown vertically upwards reaches the roof of a house

100 m

high. At the moment this ball is thrown vertically upward, another ball is dropped from rest vertically downwards from the roof of the house. At which height will the balls pass each other?

MEDIUM

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 8 - Motion in One and Two Dimensions>NUMERICALS>Q 14

Two balls

A

and

B

are thrown simultaneously,

A

vertically upwards with a speed of

20 m s^{- 1}

from the ground, and

B

vertically downwards from a height of

40 m

with the same speed and along the same line of motion. At what point do the balls collide?

MEDIUM

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 8 - Motion in One and Two Dimensions>NUMERICALS>Q 15

A person standing on the roof of a building

30 m

high drops a ball vertically downwards with an initial velocity of

500 c m s^{- 1}

. Acceleration due to gravity is

9.8 m s^{- 2}

. What will be the velocity of the ball after

0.5 s

EASY

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 8 - Motion in One and Two Dimensions>NUMERICALS>Q 15

A person standing on the roof of a building

30 m

high drops a ball vertically downwards with an initial velocity of

500 c m s^{- 1}

. Acceleration due to gravity is

9.8 m s^{- 2}

. Where will be the ball after

1.5 s

EASY

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 8 - Motion in One and Two Dimensions>NUMERICALS>Q 15

A person standing on the roof of a building

30 m

high drops a ball vertically downwards with an initial velocity of

500 c m s^{- 1}

. Acceleration due to gravity is

9.8 m s^{- 2}

. What will be the velocity of the ball striking the earth?

MEDIUM

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 8 - Motion in One and Two Dimensions>NUMERICALS>Q 16

A boy standing on the top of a

40 m

high building projects a stone vertically upwards with an initial velocity of

10 m s^{- 1}

. The stone eventually falls to the ground. After how long will the stone strike the ground?

The figure below shows the time-acceleration graph of a body. Draw the corresponding time- velocity graph. At time t=0, the velocity, v=0.

Important Questions on Motion in One and Two Dimensions

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The figure below shows the time-acceleration graph of a body. Draw the corresponding time- velocity graph. At time $t = 0$ , the velocity, $v = 0$ .