Question # 1

The shortest distance between two points directed from its initial point to final point is called:

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Velocity

Displacement

Speed

Distance

The product of force and time is called change in:

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Momentum

Impulse

Force

Both a and b

When a body is moving with uniform positive acceleration, the velocity- time graph is a straight line. Its slope is

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zero

negative

positive

non-existing

Dimensions of velocity are

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[L]

[T]

[LT^-1]

[LT^-2]

The velocity of a projectile is maximum

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at the point of projection

just before striking the ground

at none of them

at both of them

If the slope of the velocity-time graph increases at constant rate with time, then the body is said to have

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uniform deceleration

uniform negative acceleration

average acceleration

uniform positive acceleration

The second law gives the relationship between

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mass and velocity

force and acceleration

velocity and acceleration

mass and weight

Earth is considered to be

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a non-inertial frame

an inertial frame

an accelerated frame

none of the above

The SI units of momentum is

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kg m s^-2

kg ms

kg m s²

N-s

A certain force gives an acceleration of 2 m/sec²to a body mass 5 kg. The same force would give a 20 kg object an acceleration of:

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0.5 m/sec²

5 m/sec²

1.5 m/sec²

9.8 m/sec²

A projectile on its path gets divided into two pieces at its highest point. Which is true?

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Momentum increases

Momentum decreases

Kinetic energy increases

Kinetic energy decreases

Two bodies of masses 1 kg and 5 kg are dropped gently form the top of a tower. A a point 20 cm from the ground both the bodies will have the same

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Momentum

Kinetic energy

Velocity

Total energy

When a bicycle is in motion but not pedaled, the force of friction exerted by the ground on the two wheels is such that it acts

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In the backward direction on the front wheel and in the forward direction on the rear wheel

In the forwards directions on the front wheel and in the backward direction on the rear wheel

In the forward direction on both the wheels

In the backward direction on both the wheels

An airplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically above a point A on the ground, a bomb is released from it. The bomb strikes the ground, at point B. The distance AB is

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1200 m

0.33 km

3.33 km

33 km

A body of weight 1 N has a kinetic energy of 1 joule when its speed is:

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1.46 m sec^-1

2.44 m sec^-1

3.42 m sec^-1

4.43 m sec^-1

Work done along a closed path in a gravitational force is:

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maximum

Minimum

Zero

Unity

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