Why Ballistic missile fails in some circumstances of precision ?

A. Due to their shape
B. Due to air resistance
C. Due to angle of projection
D. All of these

A body is moving with uniform velocity. Its______________________?

A. Speed changes
B. Acceleration changes
C. Direction of motion changes
D. Displacement from origin changes

When velocity time graph is a straight line parallel to time axis then__________________?

A. Acceleration is const
B. Acceleration is variable
C. Acceleration is zero
D. Velocity is zero

Slope of velocity time graph is_____________________?

A. Acceleration
B. Distance
C. Force
D. Momentum

Which law of motion is also called law of inertia ?

A. 1st law
B. 2nd law
C. 3rd law
D. All 1st, 2nd and 3rd laws

Newtons laws do not hold good for particles_______________?

A. At rest
B. Moving slowly
C. Move with high velocity
D. Move with velocity comparable to velocity of light

2nd law of motion gives the definition of________________?

A. Force
B. Acceleration
C. Velocity
D. Both force and acceleration

When car takes turn around a curve road, the passengers feel a force acting on them in a direction away from the center of the curve. It is due to__________________?

A. Centripetal force
B. Gravitational force
C. Their inertia
D. Centrifugal force

What is the shape of velocity, time graph for constant acceleration ?

A. Straight inclined line.
B. Parabola
C. Inclined curve
D. Declined curve

Which shows the correct relation between time of flight T and maximum height H ?

A. H=gt2/8
B. H=8t2/g
C. H=8g/t2
D. H=gt2