Part 1
A ball A is thrown vertically upwards with speed u. At the same instant another ball B is released from rest at height h. At time t, the speed of A relative to B is
10
Sep
A ball A is thrown vertically upwards with speed u. At the same instant another ball B is released from rest at height h. At time t, the speed of A relative to B is A ball A is thrown vertically upwards with speed u. At the same instant another ball B is released from [...]
Two trains A and B of length 400 m each are moving on two parallel tracks with a uniform speed of 72 km h−1 in the same direction, with A ahead of B. The driver of B decides to overtake A and accelerates by 1 m s−2. If after 50 s, the guard of B just brushes past the driver of A, what was the original distance between them?
10
Sep
Two trains A and B of length 400 m each are moving on two parallel tracks with a uniform speed of 72 km h−1 in the same direction, with A ahead of B. The driver of B decides to overtake A and accelerates by 1 m s−2. If after 50 s, the guard of B [...]
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the guard of B just brushes past the driver of A ,
Two trains A and B of length 400 m each are moving on two parallel tracks with a uniform speed of 72 km h−1 in the same direction ,
what was the original distance between them? ,
with A ahead of B. The driver of B decides to overtake A and accelerates by 1 m s−2. If after 50 s ,
A police car moving on a highway with a speed of 30 km h−1 fires a bullet at a thief’s car speeding away in the same direction with a speed of 150 km h−1. If the muzzle speed of the bullet is 150 m s−1, with what speed does the bullet hit the thief’s car?
10
Sep
A police car moving on a highway with a speed of 30 km h−1 fires a bullet at a thief’s car speeding away in the same direction with a speed of 150 km h−1. If the muzzle speed of the bullet is 150 m s−1, with what speed does the bullet hit the thief’s car? [...]
A 175 m long train is travelling along a straight track with a velocity 72 km−1 h. A bird is flying parallel to the train in the opposite direction with a velocity 18 km−1 h. The time taken by the bird to cross the train is :
10
Sep
A 175 m long train is travelling along a straight track with a velocity 72 km−1 h. A bird is flying parallel to the train in the opposite direction with a velocity 18 km−1 h. The time taken by the bird to cross the train is : A person walks up a stationary escalator in [...]
A bus is moving with a speed of 10 m s−1 on a straight road. A scooterist wishes to overtake the bus in 100 s. If the bus is at a distance of 1 km from the scooterist with what speed should the scooterist chase the bus?
10
Sep
A bus is moving with a speed of 10 m s−1 on a straight road. A scooterist wishes to overtake the bus in 100 s. If the bus is at a distance of 1 km from the scooterist with what speed should the scooterist chase the bus? A person walks up a stationary escalator in [...]
A train of 150m length is going toward north direction at a speed of 10ms-1. A parrot flies at a speed of 5ms-1 toward south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to.
10
Sep
A train of 150m length is going toward north direction at a speed of 10ms-1. A parrot flies at a speed of 5ms-1 toward south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to. A person walks up a stationary escalator in t1 . If [...]
A person walks up a stationary escalator in t1 . If he remains stationary on the escalator. Then it can take him up in t2. How much time would it take him to walk up her moving escalator ?
09
Sep
A person walks up a stationary escalator in t1 . If he remains stationary on the escalator. Then it can take him up in t2. How much time would it take him to walk up her moving escalator ? A person walks up a stationary escalator in t1 . If he remains stationary on the [...]
A 130 m long train is moving in up direction with speed 72 km/hr. Another train of 120 m long is moving in down direction with speed of 108 km/hr . The time in which second train crosses the first train will be
09
Sep
A 130 m long train is moving in up direction with speed 72 km/hr. Another train of 120 m long is moving in down direction with speed of 108 km/hr . The time in which second train crosses the first train will be A stone mass M thrown straight up with initial velocity V reaches [...]
A ball is dropped from the top of a tower. In the last second of its fall, the ball covers a distance equal to 9\25 of the height of the tower. If g=10m\s², find the height of the tower is…
09
Sep
A ball is dropped from the top of a tower. In the last second of its fall, the ball covers a distance equal to 9\25 of the height of the tower. If g=10m\s², find the height of the tower is… A ball is dropped from the top of a tower. In the last second of [...]
A particle is projected vertically upward with speed 20m/s .Find the time after particle is at a height 15 m above the ground.(g=10m/s^(2))
09
Sep
A particle is projected vertically upward with speed 20m/s .Find the time after particle is at a height 15 m above the ground.(g=10m/s^(2)) A particle is projected vertically upward with speed 20m/s .Find the time after particle is at a height 15 m above the ground.(g=10m/s^(2)) September 9, 2020 Category: Chapter 3 - Motion in [...]