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If an object of mass 6kg was dropped from a height 35m (initially at rest), how long would it take to reach the ground under free fall?

Free fall == only gravity actingUse one of the SUVAT equations: s = ut + 0.5at²s=35m, u=0 (starts at rest), a=g=9.81ms^-2 (gravitational constant), t=?Through rearranging: t=(2s/a)

Answered by Charlotte A. • Physics tutor

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Can you explain the difference between a real and a virtual image?

The ways in which these two things are experienced in real life is very different - you see a virtual image when you look through a lens or at a mirror, because light is coming at you as if it were coming...

Answered by Dan G. • Physics tutor

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What led to the Plum Pudding model being replaced by Rutherford's nuclear model of the atom? (6 marks)

The Plum Pudding model states that charge and mass is spread throughout the atom. An idea that electrons are spread within a mass of positive charge.Rutherford carried out an experiment where he fired hig...

Answered by Rachna P. • Physics tutor

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A baseball player strikes a ball with an initial velocity of 43ms^-1 at an angle of 32° to the horizontal. How far does the ball travel horizontally in 4 seconds?

Since the Initial velocity has a direction that is 32° to the horizontal we can split the velocity into it's components. The horizontal component of the velocity is v_x = 43cos(32) (m/s). Since ...

Answered by Jack L. • Physics tutor

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What is thermionic emission?

Thermionic emission is the process by which electrons are emitted by a metal as a result of the heating of the metal. The electrons which are emitted are all from the sea of free electrons which bond the ...

Answered by Noah S. • Physics tutor

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