What is the acceleration of a particle moving with uniform velocity?
1 ms-2
2 ms-2
0
∞
Velocity is a
Scalar quantity
Vector Quantity
Both Scalar and Vector
None of these
A car covers the first half of the distance between two places at a speed of 40 km/hr and second half at 60 km/hr. The average speed of the car is :
100 km/hr
50 km/hr
48 km/hr
52 km/hr
1/2 mv2 = mgh. This is an example of
Newton's first law of motion
Law of conservation of energy
Elastic collision
Projectile motion
Distance is a
Motion in a straight line is called
circular motion
periodic motion
rectilinear motion
translatory motion
For motion on a straight line path with constant acceleration,the ratio of magnitude of displacement and the distance covered is
= 1
> 1
< 1
≤ 1
A particle is pushed along a horizontal surface in such a way that it start with a velocity of 12m/s and decreases at the rate of 0.5 m/s2. The time it will take to come to rest is:
42s
48s
24s
84s
The force of gravity acting on a body is called
Mass of the body
Weight of the body
Inertia of the body
Momentum of the body
The ratio of the total distance travelled by the body to the total time of journey is called
Speed
Average speed
Acceleration
Average acceleration