Acceleration

IMPORTANT

Acceleration: Overview

This topic covers concepts such as Acceleration Due to Change in Velocity, SI Unit of Acceleration, Acceleration and Non-uniform Acceleration etc.

Important Questions on Acceleration

MEDIUM
IMPORTANT

What is the importance of acceleration?

MEDIUM
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If a body is moving in a circular path with uniform circular motion. Then it's acceleration will be uniform or non-uniform?

EASY
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What are all types of acceleration and explain them

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What is Non-uniform Acceleration? Give an example.

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What is Uniform Acceleration? Give an example.

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What is the ratio of CGS to SI unit of acceleration?

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What is SI unit of acceleration?

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In the above graph what is the value of acceleration? 

HARD
IMPORTANT

A car accelerates from a velocity of 5 ms-1 to a velocity of 20 ms-1in 5 seconds. The magnitude of acceleration of the car would be: 

HARD
IMPORTANT

The speedometer readings of a car are shown below. Find the acceleration of the car and its displacement.

Time             Speedometer
9:25 am 36 km/h
9:45 am

72 km/h

HARD
IMPORTANT

Parachutes are used to slow down a certain racing car.

Figure 1 shows the racing car, of total mass 750 kg, slowing down by using parachutes.

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Figure 2 is the speed-time graph  20 s after the car reaches full speed.

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At the timet=60 s, the parachutes open.

(a) In Fig 1 

   (i) mark a point, labelled A, where the car is moving at a constant speed.

   (ii) mark a point, labelled B, where the car is decelerating at a uniform rate.

   (iii) mark a point, labelled C, where the car is decelerating at a non-uniform rate.

(b) Calculate

   (i) the deceleration of the car at the time t=6.5 s.

   (ii) the resultant force acting on the car at this time.

(c) Explain why there is no resultant force acting on the car at the time t=4.0 s

HARD
IMPORTANT

When a ball is thrown in vertically upward direction then which of the following remains constant.?

EASY
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A body describes uniformly accelerated motion along a straight line. Which of the following displacement-time graphs shown represent the motion correctly?
 

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At what interval does the object with the acceleration-time graph as shown in the figure make uniform linear motion?

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A person sitting in a train moving with a constant velocity along a straight line throws a ball vertically upwards, then the ball will

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When x oc t", acceleration is constant when n
equals

MEDIUM
IMPORTANT

A cyclist rolls down a hill. He starts from rest and after 8 s he is travelling at 13.6 m/s. Then his acceleration will be K ms2. Find the value of K.

MEDIUM
IMPORTANT

A train has a driving force of 160,000 N and a mass of 800,000 kg. Then its acceleration will be K m s-2. Find the value of K.

EASY
IMPORTANT

For a body in non-uniform acceleration that velocity does not remain constant. 

EASY
IMPORTANT

What do you mean by non-uniform acceleration?