Part 1
If a body A of mass m is thrown with velocity v at an angle of 30 degree to the horizontal and another body B of mass 2 m is thrown with the same speed at an angle of 60 degree to the horizontal. Then
16
Sep
If a body A of mass m is thrown with velocity v at an angle of 30 degree to the horizontal and another body B of mass 2 m is thrown with the same speed at an angle of 60 degree to the horizontal. Then If a body A of mass m is thrown with [...]
The displacement of a particle is given by y = α + βt + γt^2 – delta t^4. The initial velocity and acceleration, respectively, are
16
Sep
The displacement of a particle is given by y = α + βt + γt^2 – delta t^4. The initial velocity and acceleration, respectively, are are respectively The displacement of a particle is given by y = α + βt + γt^2 - delta t^4. The initial velocity and acceleration September 16, 2020 Category: Cengage [...]
A man in a balloon, rising vertically with an acceleration of 5 m/s^2, releases a ball 10 s after the balloon is let go from the ground. The greatest height above the ground reached by the ball is
15
Sep
A man in a balloon, rising vertically with an acceleration of 5 m/s^2, releases a ball 10 s after the balloon is let go from the ground. The greatest height above the ground reached by the ball is A man in a balloon releases a ball 10 s after the balloon is let go from [...]
A parachutist after bailing out falls 80 m without friction. When the parachute opens, it decelerates at 2 m/s^2. He reaches the ground with a speed of 20 m/s. At what height, did he bail out?
15
Sep
A parachutist after bailing out falls 80 m without friction. When the parachute opens, it decelerates at 2 m/s^2. He reaches the ground with a speed of 20 m/s. At what height, did he bail out? A parachutist after bailing out falls 80 m without friction. When the parachute opens did he bail out? it [...]
A ball is dropped on the floor a height of 80 m rebounds to a height of 20 m. If the ball is in contact with floor for 0.1 s, the average acceleration during contact is
15
Sep
A ball is dropped on the floor a height of 80 m rebounds to a height of 20 m. If the ball is in contact with floor for 0.1 s, the average acceleration during contact is A ball is dropped on the floor a height of 80 m rebounds to a height of 20 m. [...]
A body freely falling from the rest has a velocity v after it falls through a height h. The distance, it has to fall down further for its velocity to become double, is :
15
Sep
A body freely falling from the rest has a velocity v after it falls through a height h. The distance, it has to fall down further for its velocity to become double, is : A body freely falling from the rest has a velocity v after it falls through a height h. The distance is [...]
The ratio of the kinetic energy required to be given to a satellite to escape from the earth’s gravity to the kinetic energy required to be given to it so that it moves in a circular orbit just above the earth’s surface is:
15
Sep
The ratio of the kinetic energy required to be given to a satellite to escape from the earth’s gravity to the kinetic energy required to be given to it so that it moves in a circular orbit just above the earth’s surface is: If a satellite orbits as close to the earth's surface as possible [...]
The ratio of the radii of planets A and B is K1 and ratio of accelerations due to gravity on them is K2 The ratio of escape velocities from them will be:
15
Sep
The ratio of the radii of planets A and B is K1 and ratio of accelerations due to gravity on them is K2 The ratio of escape velocities from them will be: The ratio of the radii of planets A and B is K1 and ratio of accelerations due to gravity on them is K2 [...]
The mass of a spaceship is 1000 kg. It is to be launched from the earths surface out into free space. The value of g and R (radius of earth) are 10 m/s and 6400 km respectively. The required energy for this work will be :
15
Sep
The mass of a spaceship is 1000 kg. It is to be launched from the earths surface out into free space. The value of g and R (radius of earth) are 10 m/s and 6400 km respectively. The required energy for this work will be : If a satellite orbits as close to the earth's [...]
The escape velocity for a body projected vertically upwards from the surface of earth is 11 km/s. If the body is projected at an angle of 45 degree with the vertical, the escape velocity will be
15
Sep
The escape velocity for a body projected vertically upwards from the surface of earth is 11 km/s. If the body is projected at an angle of 45 degree with the vertical, the escape velocity will be The escape velocity for a body projected vertically upwards from the surface of earth is 11 km/s. If the [...]