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QR Challenge: Astrophysics

QuestionAnswer
What is the difference between mass and weight?
If a person has a mass of 50Kg, what is their weight on Earth?
How do we work out Gravity? (what is the calculation)
Who discovered the force of gravity?
Name the planets in order from the Sun
How many days does it take for Earth to orbit the Sun?
A car is travelling at 40 m/s for 15 seconds. How far has it travelled?
A car has a speed of 10 m/s and it travelled a ditance of 100 m. How long did it take to get there?
A car took 15 seconds to go 25 metres, what is its speed?
A drawing pin has an area of 0.002 m, it is push into a cork board with a force of 10 N. What is the pressure?
A persons foot has an area of 0.5m, the pressure exerted on the floor is N/m. What is the force?
What two factors affect pressure?
What is the calculation for working out moments?
A boy weighs 500N. He is sat on a see-saw 10m away from the pivot. Work out the moment.
Why is the force of air resistance bigger when the car is travelling at a fast speed?
In the past, scientists used to think there was only 6 planets in our solar system. What does this tell you about our knowledge of the solar system today?
What causes scientists to reject an idea and replace it with a new one?

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