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Physics
A Level

A spacecraft needs to be slowed down from a speed of 96m/s to 8.2m/s. This can be done by firing an object as the spacecraft is moving. If the mass of the spacecraft is 6730kg and the object is 50kg, calculate the velocity of the ejected object.

As we have there is object being fired out of the front of the spaceship we know the ship will have a lower velocity than before using the conversation of momentum. "The total momentum of a system is...

Answered by Ben Q. Physics tutor
1723 Views

Can you talk me through how to solve problems on projectiles? I always get confused

The strategy is to consider the horizontal and vertical components of the motion separately, and use the equations of motion in each direction. A few things to remember are: the vertical acceleration is a...

Answered by Maham K. Physics tutor
2188 Views

Given the Earth orbits the Sun at a distance of 1.49*10^11m with Me = 5.97*10^24kg and Msolar = 1.99*10^30, what is the gravitational force between the Earth and Sun?

Using F = Gm1m2/r^2 and substituting in the values, we get F = 3.57*10^22N.

Answered by Aaron S. Physics tutor
1824 Views

Why does the Photoelectric Effect lead to the conclusion that classical physics cannot be all of physics?

The photoelectric effect is the emission of electrons on a charged zinc plate, when UV light is shone on it, but not low energy visible light.

This phenomena is caused by the quantisation of light....

Answered by Benjamin O. Physics tutor
5803 Views

What is the difference between linearly, directly and inversely proportional relationships?

A relationship is a way of describing how one variable can affect another. If a relationship is linear, then a change in one variable will cause a change in another variable by a fixed amount. An example ...

Answered by Maxwell O. Physics tutor
35651 Views

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