Advanced mechanics HSC Physics Quiz

1.

A balling ball rolls off a 1m high horizontal bench with an initial velocity of 4.0 m/s

How long will it take the marble to hit the floor?

0.2 s

0.25 s

0.45 s

0.6 s

2.

A space rock is moving in circular orbit of radius 7.0 * 10^(6) m around the Earth.

If the speed of the satellite is 8.1 * 10^(3) m/s, what is its centripetal acceleration?
https://edzion.com/2022/11/23/circular-motion-hsc-questions/

9.4 m/s

9.8 m/s

5.6 * 10^(25) m/s/s

3.9 * 10^(32) m/s/s

3.

A space man decides he wants to move a geostationary orbit to a higher orbit

Select the correct statement about the orbit change

Gravitational potential energy decreases the higher the orbit

Gravitational potential energy is not dependent on the mass of the satalite.

The difference between the energy of the higher orbit and that of the geostationary orbit is the work done.

The work done is zero because orbits are circular.

4.

A 120 kg object has a weight of 480 N on the surface of planet X.

What is the acceleration due to gravity on the surface of planet X.

0.25 m/s/s

4 m/s/s

250 m/s/s

14400 m/s/s

5.

A car can safely take a icy corner with a velocity of v, if the car doubles the velocity it is travelling it should...

Double the radius of the corner

Halve the radius of the corner

Have a more banked corner

Have a less banked corner