Which one of the following is an example of the force of gravity of the earth acting on a vibrating pendulum bob?
An object is moving, with uniform acceleration a. Its initial velocity is u and after time t its velocity is v. The equation of its motion is v = u + at. The velocity (along y-axis) time (along x-axis) graph shall be a straight line
If T is the time period of an oscillating pendulum, which one the following statements is not correct?
If the motion of an object is represented by a straight line parallel to the time axis in a distance-time graph, then the object undergoes
A passenger in a moving train tosses a coin upward which falls behind him. It implies that the motion of the train is
A motor vehicle is moving on a circle with uniform speed. The net acceleration of the vehicle is
If the distance S covered by a moving car in rectilinear motion with a speed v in time t is given by S = vt, then the car undergoes
A bullet is fired vertically up from a 400 m tall tower with a speed 80 m/s. If g is taken as 10 m/s2, the time taken by the bullet to reach the ground will be
Newton's law of motion cannot be applicable to the particles moving at a speed comparable to the speed of
Automobiles are fitted with a device that shows the distance travelled. Such a device is known as
The speed of a car travelling on a straight road is listed below at successive intervals of 1 s:
Time (s) 0 1 2 3 4
Speed (m/s) 0 2 4 6 8
Which of the following is/are correct?
The car travels
Select the correct answer using the code given below:
In a vacuum, a five-rupee coin, a feather of a sparrow bird and a mango are dropped simultaneously from the same height. The time taken by them to reach the bottom is t1, t2 and t3 respectively. In this situation, we will observe that
An object moves in a circular path with a constant speed. Which one of the following statements is correct?
An object of mass 2 kg is sliding with a constant velocity of 4 m s–1 on a frictionless horizontal table. The force required to keep the object moving with the same velocity is
A passenger in a moving train tosses a coin which falls behind him. It means that motion of the train is
The inertia of an object tends to cause the object
A goalkeeper in a game of football pulls his hands backwards after holding the ball shot at the goal. This enables the goal keeper to
Which of the following figures represents uniform motion of a moving object correctly?
Suppose a boy is enjoying a ride on a merry-go-round which is moving with a constant speed of 10 m s–1. It implies that the boy is
From the given v – t graph, it can be inferred that the object is
If the displacement of an object is proportional to square of time, then the object moves with
A body is thrown vertically upward with velocity u, the greatest height h to which it will rise is
To sharpen the blade of a knife by rubbing it against a surface, which of the following will be most suitable?
During dry weather, while combing hair, sometimes we experience hair flying apart. The force responsible for this is
A bus travels 54 km in 90 minutes. The speed of the bus is