Cengage JEE Mains Physics by B.M Sharma
The average velocity of a body moving with uniform acceleration after travelling a distance of 3.06 m is 0.34 m/s. If the change in velocity of the body is 0.18 m/s. During this time, its uniform acceleration is
05
Sep
The average velocity of a body moving with uniform acceleration after travelling a distance of 3.06 m is 0.34 m/s. If the change in velocity of the body is 0.18 m/s. During this time, its uniform acceleration is its uniform acceleration is The average velocity of a body moving with uniform acceleration after travelling a [...]
A moving car possesses average velocities of 5 ms^−1, 10 ms^−1, and 15 ^ms−1 in the first, second, and third seconds, respectively. What is the total distance covered by the car in these 3 s ?
05
Sep
A moving car possesses average velocities of 5 ms^−1, 10 ms^−1, and 15 ^ms−1 in the first, second, and third seconds, respectively. What is the total distance covered by the car in these 3 s ? 10 ms^−1 A moving car possesses average velocities of 5 ms^−1 and 15 ^ms−1 in the first and third [...]
A train is moving at a constant speed V when its driver observes another train in front of him on the same track and moving in the same direction with constant speed v. If the distance between the trains is x, then what should be the minimum retardation of the train so as to avoid collision?
05
Sep
A train is moving at a constant speed V when its driver observes another train in front of him on the same track and moving in the same direction with constant speed v. If the distance between the trains is x, then what should be the minimum retardation of the train so as to avoid [...]
A police party is chasing a dacoit in a jeep which is moving at a constant speed v. The dacoit is on a motorcycle. When he is at a distance x from the jeep, he accelerates from rest at a constant rate. Which of the following relations is true if the police are able to catch the dacoit?
05
Sep
A police party is chasing a dacoit in a jeep which is moving at a constant speed v. The dacoit is on a motorcycle. When he is at a distance x from the jeep, he accelerates from rest at a constant rate. Which of the following relations is true if the police are able to [...]
A parachutist drops first freely from an aeroplane for 10 s and then his parachute opens out. Now he descends with a net retardation of 2.5 ms^−2. If he bails out of the plane at a height of 2495 m and g = 10 ms^−2, his velocity on reaching the ground will be
05
Sep
A parachutist drops first freely from an aeroplane for 10 s and then his parachute opens out. Now he descends with a net retardation of 2.5 ms^−2. If he bails out of the plane at a height of 2495 m and g = 10 ms^−2, his velocity on reaching the ground will be A body [...]
A body is projected upwards with a velocity u. It passes through a certain point above the ground after t1. The time after which the body passes through the same point during the return journey is
05
Sep
A body is projected upwards with a velocity u. It passes through a certain point above the ground after t1. The time after which the body passes through the same point during the return journey is A body is projected upwards with a velocity u. It passes through a certain point above the ground after [...]
A stone is dropped from the 25th storey of a multistoried building and it reaches the ground in 5 s. In the first second, it passes through how many storeys of the building? (g = 10 ms^−2)
05
Sep
A stone is dropped from the 25th storey of a multistoried building and it reaches the ground in 5 s. In the first second, it passes through how many storeys of the building? (g = 10 ms^−2) A stone is dropped from the 25th storey of a multistoried building and it reaches the ground in [...]
A ball is thrown from the top of a tower in vertically upward direction. The velocity at a point h meter below the point of projection is twice of the velocity at a point h meter above the point of projection. Find the maximum height reached by the ball above the top of tower.
05
Sep
A ball is thrown from the top of a tower in vertically upward direction. The velocity at a point h meter below the point of projection is twice of the velocity at a point h meter above the point of projection. Find the maximum height reached by the ball above the top of tower. A [...]
A juggler keeps on moving four balls in air throwing the balls after regular intervals. When one ball leaves his hand (speed = 20 ms^−1), the position of other balls (height in metre) will be : (Take g = 10 ms^−2)
05
Sep
A juggler keeps on moving four balls in air throwing the balls after regular intervals. When one ball leaves his hand (speed = 20 ms^−1), the position of other balls (height in metre) will be : (Take g = 10 ms^−2) A juggler keeps on moving four balls in air throwing the balls after regular [...]
A body starts from rest and travels a distance S with uniform acceleration, then moves uniformly a distance 2S uniformly, and finally comes to rest after moving further 5S under uniform retardation. The ratio of the average velocity to maximum velocity is:
05
Sep
A body starts from rest and travels a distance S with uniform acceleration, then moves uniformly a distance 2S uniformly, and finally comes to rest after moving further 5S under uniform retardation. The ratio of the average velocity to maximum velocity is: A body starts from rest and travels a distance S with uniform acceleration [...]