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For a car with a mass of 1200kg, how long will it take for it to accelerate to 25m/s, starting from rest, with a total driving force of 1,500N?

This can be solved in 2 main sections: the first to find the acceleration of the car, and then the second to find how long it spends accelerating. To find the acceleration, Newton's 2nd Law (F=ma) can be use...
CS
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Describe the difference between reflection and refraction (assume the mediums have smooth surfaces)

Reflection: a wave hits a surface, and bounces back into the medium it was originaly in Refraction: a wave enters a medium with a different refractive index to the original medium it was travelling in, at an...
AB
Answered by Abigail B. • Physics tutor
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What is a force?

A force is any influence that causes an object to undergo a specific change. Resulting unbalanced forces can cause changes in speed, shape or direction, whereas equal or balanced forces result in an equilibr...
WH
Answered by William H. • Physics tutor
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Simon's car has run out of fuel. He must push his car 5 metres to the petrol pump, using a force of 200N. How much work does Simon do?

This question asks students to recall the equation Work done = Force x Distance. In this question, students must multiply 200 by 5, with the answer being 1000 Joules. It is important that the students rememb...
JW
Answered by James W. • Physics tutor
3155 Views

What is terminal velocity and what causes it?

Initially, when you drop an object the only force acting on it is gravity. This accelerates the object towards the ground. As the objects speed increases so does the force of air resitance acting on the obje...
CL
Answered by Calum L. • Physics tutor
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