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What's the difference between elastic and inelastic collisions ?

Well it all depends on how the energy of the moving objects is transfered during the collision. In a elastic collision, first the objects are moving toward each other with both a certain kinetic energy, then...
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Answered by FLORENCE T. • Physics tutor
5674 Views

How do I solve a problem about a mass on a slide?

It is good practice in physics to draw a diagram of the situation, so the first thing we want to do is create a picture of the problem, focussing on the object on the slide. Now we need to analyse what is ha...
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Answered by Stefano Z. • Physics tutor
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A truck with mass 1200kg is moving at 8m/s when it collides head-on with a stationary car of mass 800kg. As they collide, the vehicles move together with the same velocity, v. Calculate this velocity.

Momentum is conserved. MU + mu = (M+m)v (1200 x 8) + (800 x 0) = (1200 + 800)v 9600 = 2000v v = 9600/2000 = 4.8m/s
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Answered by Rachel H. • Physics tutor
7846 Views

What is a stationary wave?

A stationary wave forms when there are two waves of equal frequency (or wavelength) travelling in opposite directions, passing through one another. Interference occurs, with constructive interference at anti...
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Answered by Samuel P. • Physics tutor
10157 Views

What is electrical current?

How much electrical charge has been transferred per second (from the relationship Q=It) charge = current x time.
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Answered by Suzanna H. • Physics tutor
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