Kinetic energy, ke
3 marks · NormalA golf ball (mass 0.045 kg) leaves the club at a speed of 38 m/s.
(a)[3 marks]
Calculate the kinetic energy of the golf ball.
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32.5 J (±0.2)
Also accept: 32 J; 32.45 J
Common mistakes: Not squaring speed; Wrong unit
Show mark scheme and worked solution
Marking points
M1 (a) · 1 mark · Correct formula and values
M2 (a) · 1 mark · Correct calculation of v^2 (38^2)
A1 (a) · 1 mark · Correct final answer and unit
Worked solution
KE = 1/2 m v^2