I think you need more information like the force of gravity and the force of the three people. Once you combine the two, however, you should get the net force.
Answer: 4
Explanation: because 0s aren’t significant and after the decimal point, there was to be a value greater than 0 than the rest are sig figs.
Answer:
Je ne Sachez que Qu’est-ce que le
W = F * s
Here, F = 50 N
s = 15 m
Substitute their values,
W = 50 * 15
W = 750 J
In short, Your Answer would be 750 Joules
Hope this helps!