Question

he positive and negative time are
The instant of time which is taken after the origin of time (i.e., zero-time) is positive time
The instant of time which is taken before the origin of time is the negative time.
Both (a) & (b) are true
Both (a) & (b) are false

Can a body have zero velocity but yet possesses acceleration?
No
when a body is projected upwards, at a highest point its velocity is zero
but the acceleration is equal to ‘g’, the acceleration due to gravity.
Both (b) & (c) are true

The correct statement from the following is
A body having zero velocity will not necessarily have zero acceleration.
A body having zero velocity will necessarily have zero acceleration.
A body having uniform speed can have only uniform acceleration.
A body having non-uniform speed can have only uniform acceleration.

An aeroplane is flying with a uniform speed of 100km/h along the circumference of a circle. The change in velocity in half the revolution will be (km/h)
100 b) 200 c) 300 d) 150

When a ball is thrown up vertically, with velocity , it reaches a maximum height of . If one wishes to triple the maximum height, then the ball should be thrown with a velocity of
b) c) d)

A ball is dropped vertically and another ball is thrown horizontally from the same height and at the same time. If air resistance is neglected, then,
Ball reaches the ground first
b) Ball reaches the ground first
Both the balls reach the ground at the same time.
Respective masses of the two balls will decide the time

Two quantities have different dimensions. Which mathematical operation given below is physically meaningful?
b) c) d) none

The coordinates of a moving particle at any time are given by The speed of the particle at time is given by :
b) c) d)

The maximum range of a projectile is times its actual range. What is the angle of projection for the actual range?
450 b) 600 c) 750 d) 300

A bomb is dropped from an aeroplane moving horizontally at a constant speed. When air resistance is taken into consideration, then the bomb
Flies with the aeroplane. b) falls on earth ahead aeroplane
Falls on earth behind aeroplane d) falls on earth exactly below aeroplane​

Answer 1

Answer:

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