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2 Motion and forces

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Question 25

After being released, a 20 kg curling stone continues in a straight line. At the start of a 10 s interval its speed is 2.5 m s−12.5\ \mathrm{m\,s^{-1}}2.5 ms−1. At the end of the interval its speed is 1.5 m s−11.5\ \mathrm{m\,s^{-1}}1.5 ms−1.

What is the magnitude of the mean resultant force on the curling stone?

[1]
A

0.10 N0.10\ \mathrm{N}0.10 N

B

5.0 N5.0\ \mathrm{N}5.0 N

C

20 N20\ \mathrm{N}20 N

D

2.0 N2.0\ \mathrm{N}2.0 N

Markscheme

2 Motion and forces Questions

  1. GCSE
  2. /Physics
  3. /2 Motion and forces

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