If a cricket ball of mass 500g is thrown upwards from the ground with an initial velocity of 20 m/s, how high will the ball reach?

The best method of answering this question would be to look at the energy of the ball at the moment it is thrown and at the moment it reaches its highest point.

When the ball is thrown, initially all the energy is kinetic. We can calculate the ball's kinetic energy using KE = 0.5*m*v2  where m is the mass and v the velocity.

Using this equation we find:

KE = 0.5*0.5*202 - the ball's mass must be in kg, hence 0.5 instead of 500

KE = 100J - remember units!

Now let's think about the ball at its highest point. At this moment, the ball will have stopped moving, and all its kinetic energy will have been converted into gravitational potential energy. This agrees with the law of conservation of energy.

Therefore the ball will have 100J of gravitational potential energy.

Using the equation for GPE, we can work out the height the ball has reached.

GPE = m*g*h where g is the gravitational acceleration on earth (roughly 10gms-2) and h is the height

100 = 0.5*10*h

h = 20m

Thomas C. 11 Plus Maths tutor, A Level Maths tutor, 13 plus  Maths tu...

9 months ago

Answered by Thomas, a GCSE Physics tutor with MyTutor

Still stuck? Get one-to-one help from a personally interviewed subject specialist


£18 /hr

Elliot D.

Degree: Mathematics (Bachelors) - St. Andrews University

Subjects offered:Physics, Maths


“Hi, I'm a 2nd year Computer Science student at St Andrews University. I mainly teach Maths at both GCSE and A-level.”

£20 /hr

Max G.

Degree: Mathematics and Physics (Masters) - Durham University

Subjects offered:Physics, Maths+ 2 more


“I am a maths and physics student at the University of Durham, for as long as I can remember i have been obsessed with all things science! I am patient, friendly and most of all understanding to the fact that the sciences aren't for ev...”

£20 /hr

Josh M.

Degree: Biological Natural Sciences (Bachelors) - Cambridge University

Subjects offered:Physics, Maths+ 3 more

-Oxbridge Preparation-

“Who am I? I'm currently studying Natural Sciences in my third year at Cambridge University, with a focus on Neuroscience. Science is my passion, I've loved it at every level I've studied it, and a desire to pass on my passion is part ...”

About the author

Thomas C.

Currently unavailable: for new students

Degree: Natural Sciences (Physical) (Bachelors) - Cambridge University

Subjects offered:Physics, Science+ 7 more

Further Mathematics
-Personal Statements-
-Oxbridge Preparation-

“Hi! I`m Tom, a 2nd year Natural Sciences undergraduate at Cambridge University. I am a very positive and empathetic person with a love for the Sciences. I am an experienced tutor in Maths, Physics and Chemistry from GCSE to A level a...”

You may also like...

Posts by Thomas

A 0.20 kg mass is whirled round in a vertical circle on the end of a light string of length 0.90 m. At the top point of the circle the speed of the mass is 8.2 m/s. What is the tension in the string at this point?

Differentiate the function: y = sin(x^2)*ln(5x)

How many moles of Magnesium must react with excess Oxygen to produce 80g of Magnesium oxide?

If a cricket ball of mass 500g is thrown upwards from the ground with an initial velocity of 20 m/s, how high will the ball reach?

Other GCSE Physics questions

Why does lowering the control rods in a nuclear reactor reduce the amount of energy released each second from the nuclear fuel?

What is teminal velocity?

How fast are geostationary satellites moving?

A kettle is found to output 65J when its input energy is 100J. What is the efficiency of the kettle, and what happens to the rest of the energy?

View GCSE Physics tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss