JEE 2020 Physics: Kinematics Quiz 2 (17.07.2019) for JEE & BITSAT Exams

Question 1

A projectile is fired from the ground at some angle and after some time, it comes back to the ground. Which condition is true:
(a) It returns to ground at the same angle
(b) It returns to the ground at slightly different angle
(c) It returns with the same velocity
(d) It returns with different velocity
Select the correct answer using the given code.

Question 2

A projectile is thrown vertically upwards with a velocity ‘u’, the time for which it remains in air can be found by setting the angle equals to 90 °.What will be the time of flight of such a projectile?

Question 3

A plane is inclined as shown in figure. A bob is projected from point A with a velocity 10 ms^-1. What will be the range of the bob on that inclined plane?

Question 4

What is the maximum height attained by a shell which is at an angle of 30ᵒ and a velocity 150 m/s? (Take g=9.8ms^-2)

Question 5

A ball of mass 500 g hung from the ceiling of a room by a string 3 m long is set into oscillations. What is the trajectory of ball; if the string is cut and the ball is at its mean position?

Question 6

Two buildings are at 150 m from each other. A child throws a ball horizontally from a window 50m above the ground in one building. With what velocity must the ball be thrown so that it enters a window 10m above the ground in the second building?

Question 7

A projectile fired from the ground follows a parabolic path. The speed of a projectile is ______ at the top of the path. What is the correct option to fill the blank?

Question 8

A launching device is constructed such that it can launch the ball at ground level with an initial velocity of 50 m/s at an angle of 45ᵒ to the horizontal. Taking air resistance into account, which one of the following is the correct option?

Question 9

What will be the ratio of the maximum heights reached by two bodies which are thrown with the same initial velocity at angles θ and (90ᵒ - θ)?

Question 10

A aircraft is flying horizontally at a height of 1.5 km with a constant speed of 720km/h and it passes directly overhead an anti-aircraft gun. What should the angle from the vertical that the gun fired for the shell with muzzle speed 600 m/s to hit the aircraft?