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What is the importance of the resultant force in a free-fall question?

The resultant force is firstly a key-word that any examiner will notice and so it will benefit your chance of getting the marks straight away. It helps us describe whether the forces are balanced or whether ...
LC
Answered by Laura C. • Physics tutor
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How do you calculate the specific heat capacity of a substance?

c = EmΔt. With E being the thermal energy during the transfer, m being the mass of the substance, and Δt being the change in temperature.Usually they'll hide one of the values E, m or Δt in a different equat...
GT
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How much force is needed to bring a car to a halt over 5 seconds - the car is moving with velocity km/hr and with a mass of 1000kg.

Explain the concept of momentum mathematically, then draw on physical intuition to reaffirm/deepen their understandingDiscuss how there exists a relationship between the rate of change of momentum and forceU...
HL
Answered by Harrison L. • Physics tutor
2438 Views

State Newton's 1st Law:

An object will remain at rest or constant velocity if all the forces acting upon it are equal (net force=0N).
SH
Answered by Sam H. • Physics tutor
2396 Views

What is the density of a material if 4 cubic metres (m3 ) of it has a mass of 2,200 kg?

Density can be described as the amount of mass per unit volume. It describes how closely together different particles are spaced. It varies significantly from solids to liquids to gases.In terms of calculati...
JM
Answered by Jamie M. • Physics tutor
6227 Views