Chapter 4 – Motion in a Plane
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A body is moving with velocity 30m/s towards east. after 10 seconds its velocity becomes 40m/s towards north. the average acceleration of the body is
28
Aug
A body is moving with velocity 30m/s towards east. after 10 seconds its velocity becomes 40m/s towards north. the average acceleration of the body is A body is moving with velocity 30m/s towards east. after 10 seconds its velocity becomes 40m/s towards north. the average acceleration of the body is August 28, 2020 Category: Chapter [...]
Two particles A and B are move with constant velocities v1 and v2. At the initial moment, their position vectors are r1 and r2 respectively. The condition for particles A and B for their collision is
28
Aug
Two particles A and B are move with constant velocities v1 and v2. At the initial moment, their position vectors are r1 and r2 respectively. The condition for particles A and B for their collision is their position vectors are r1 and r2 respectively. The condition for particles A and B for their collision is [...]
A ship A is moving Westwards with a speed of 10 km h^−1 and a ship B 100 km South of A is moving northwards with a speed of 10 km h^−1. The time after which the distance between them becomes shortest is
28
Aug
A ship A is moving Westwards with a speed of 10 km h^−1 and a ship B 100 km South of A is moving northwards with a speed of 10 km h^−1. The time after which the distance between them becomes shortest is The x and y coordinates of the particle at any time are [...]
The x and y coordinates of the particle at any time are x=5t − 2t^2 and y = 10t respectively, where x and y are in meters and t in seconds. The acceleration of the particle at t = 2 s is:
28
Aug
The x and y coordinates of the particle at any time are x=5t − 2t^2 and y = 10t respectively, where x and y are in meters and t in seconds. The acceleration of the particle at t = 2 s is: The x and y coordinates of the particle at any time are x=5t [...]
A bus is moving on a straight road towards north with a uniform speed of 50 km/hour turns through 90 degree. If the speed remains unchanged after turning, the increase in the velocity of bus in the turning process is
24
Aug
A bus is moving on a straight road towards north with a uniform speed of 50 km/hour turns through 90 degree. If the speed remains unchanged after turning, the increase in the velocity of bus in the turning process is A bus is moving on a straight road towards north with a uniform speed of [...]
A bullet is fired with a speed of 1000 m/sec in order to penetrate a target situated at 100 m away. If g=10m/s^2, the gun should be aimed
24
Aug
A bullet is fired with a speed of 1000 m/sec in order to penetrate a target situated at 100 m away. If g=10m/s^2, the gun should be aimed A bullet is fired with a speed of 1000 m/sec in order to penetrate a target situated at 100 m away. If g=10m/s^2 the gun should be [...]
Starting from rest ,a body slides down a 45 degree inclined plane in twice the time it takes to slide down the same distance in the absence of friction .The coefficient of friction between the body and inclined plane is
24
Aug
Starting from rest ,a body slides down a 45 degree inclined plane in twice the time it takes to slide down the same distance in the absence of friction .The coefficient of friction between the body and inclined plane is a body slides down a 45 degree inclined plane in twice the time it takes [...]
Consider a car moving along a straight horizontal road with a speed of 72 km/h. If the coefficient of static friction between the tyre and the road is 0.5, the shortest distance in which the car can be stopped is?(Take g=10m/s^2)
24
Aug
Consider a car moving along a straight horizontal road with a speed of 72 km/h. If the coefficient of static friction between the tyre and the road is 0.5, the shortest distance in which the car can be stopped is?(Take g=10m/s^2) Consider a car moving along a straight horizontal road with a speed of 72 [...]
A block has been placed on an inclined plane with the slope angle θ, block slides down the plane at constant speed. The coefficient of kinetic friction is equal to:
24
Aug
A block has been placed on an inclined plane with the slope angle θ, block slides down the plane at constant speed. The coefficient of kinetic friction is equal to: A block has been placed on an inclined plane with the slope angle θ block slides down the plane at constant speed. The coefficient of [...]
The maximum speed of a car on a road turn of radius 30m, if the coefficient of friction between the tyres and the road is 0.4 ? g==9.8 m/s^2
24
Aug
The maximum speed of a car on a road turn of radius 30m, if the coefficient of friction between the tyres and the road is 0.4 ? g==9.8 m/s^2 if the coefficient of friction between the tyres and the road is 0.4 ? g==9.8 m/s^2 The maximum speed of a car on a road turn [...]