Question

http://prntscr.com/hx78ju < GCSE question, wanted to check if I was right before submitting.

Answer 1

Answer on Question #72327, Physics / Mechanics | Relativity

The diagram shows the forces acting on a boat. The boat has a mass of $300\mathrm{kg}$ . What is the acceleration of the boat?

Solution

$m = 300\mathrm{kg}$

$F_{1} = 45\mathrm{N}$

$F_{2} = 30\mathrm{N}$

$a - ?$

$m a = F_{1} - F_{2},$ $a = (F_1 - F_2) / m,$

$a = (45\mathrm{N} - 30\mathrm{N}) / 300\mathrm{kg} = 15\mathrm{N} / 300\mathrm{kg} = 0.05\mathrm{m} / \mathrm{s}^{2}$

Answer: $0.05 \, \text{m/s}^2$