½ mv² = mgh. This is an example of
Newton's second law
Projectile motion
Elastic collision
Principle of conservation of energy
The force of gravity acting on a body is called
Mass
Weight
Inertia
Acceleration
Tick and ten tick are used as units of time in
Motion sensors
Ticker tape timer
Photo gate timer
Photography
Which of the following satellites are used for weather forecasting?
All satellites
Artificial satellites
Monitoring satellites
Communication satellites
Which satellite is used to map regions of Earth's surface?
Natural satellites
Geostationary satellites
The rate of change of displacement with time is called
The velocity
The speed
The acceleration
The average speed
Kinetic energy depends on
The square of the velocity
The cube of the velocity
Half of the velocity
What is the K. E of a football of mass 0.4 kg, moving with velocity 20 m/s?
8 J
80 J
0.8 J
0.08 J
If we know initial velocity (u), final velocity (v) and time (t). Then the equation for acceleration is:
Communication satellites circle the earth in its orbit
Below the equator
At the equator
Above the equator
Depends on the size of the satellite
