Kinematic Equations for Uniformly Accelerated Motion

IMPORTANT

Kinematic Equations for Uniformly Accelerated Motion: Overview

This topic consists of various concepts like Velocity - Time Equation under Constant Acceleration,Displacement - Time Equation under Constant Acceleration,Uniformly Accelerated Motion, etc.

Important Questions on Kinematic Equations for Uniformly Accelerated Motion

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An object moving with uniform acceleration has a velocity of 12.0 cm s-1 in the positive x direction when its x coordinate is 3.00 cm. If its x coordinates 2.00 s later is -5 cm, what is its acceleration?

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At a distance L=400 m from the traffic light brakes are applied to a locomotive moving at a velocity v=54 km hr-1. Determine the position of the locomotive relative to the traffic light 1 minute after the application of the brakes if its acceleration is - 0.3 m s-2.

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A body starts from rest, what is the ratio of the distances traveled by the body during the 4th and 3rd seconds?

MEDIUM
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A body dropped from top of a tower falls 40 m during the last two seconds of its fall. The height of tower is   (g = 10 m s 2 )

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A boy standing at the top of a tower of 20 m height drops a stone. Assuming  g=10m s2, the velocity with which it hits the ground is

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A particle has initial velocity (3 i ^ +4 j ^ ) and has acceleration (0.4 i ^ +0.3 j ^ ). Its speed after 10 s is:

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A ball is dropped from a high rise platform at, t=0 starting from rest. After 6 s another ball is thrown downwards from the same platform with the speed v. The two balls meet at, t=18 s. What is the value of v(Take, g=10 m s-2 )

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A particle starts its motion from rest under the action of a constant force. If the distance covered in the first 10 seconds is  S 1 and that covered in the first 20 seconds is   S 2, then:

EASY
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A particle moves in a straight line with a constant acceleration. It changes its velocity from 10m s1  to  20m s1 while passing through a distance 135 m in t seconds. The value of t is:

MEDIUM
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What will be the ratio of the distances moved by a freely falling body from rest in fourth and fifth seconds of the journey?

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The position x of a particle with respect to time t along x-axis is given by, x=9t2t3 where, x is in meters and t is in seconds. What will be the position of this particle when it achieves maximum speed along the +ve x direction?

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Two bodies, A (of mass 1 kg) and B (of mass 3 kg), are dropped from heights of 16 m and 25 m, respectively. The ratio of the times taken by them to reach the ground is

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A ball is thrown vertically upwards. It has a speed of 10 m s-1 when it has reached one half of its maximum height. How high does the ball rise?

(Take, g=10 m s-2)

HARD
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A man throws balls with the same speed vertically upwards one after the other at an interval of 2 seconds. What should be the speed of the throw, so that more than two balls are in the air at any time?   [Giveng=9.8 m s 2 ]

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If a ball is thrown vertically upwards with speed u, the distance covered during the last t seconds of its ascent is

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A stone is thrown vertically upwards with kinetic energy K. The kinetic energy at the highest point is

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A car moving with a speed of 40 km h-1 can be stopped by applying brakes at least after 2 m. If the same car is moving with a speed of 80 km h-1, what is the minimum stopping distance?

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If a ball is thrown vertically upwards with a velocity of  40 m s-1 , then velocity of the ball after two seconds will be  (g=10 m s-2)

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If a ball is thrown vertically upwards with a velocity of   40 m s , then velocity of the ball after two seconds will be   (g=10 m s 2 )

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The water drops fall at regular intervals from a tap 5m above the ground. The third drop is leaving the tap at an instant when the first drop touches the ground. How far above the ground is the second drop at that instant?  (Take g=10m s-2)