Question

For a moving object, the force acting on the object varies directly with the object's acceleration. When a force of 70N acts on a certain object, the acceleration of the object is 7 m/s^2. If the force is changed to 80N , what will be the acceleration of the object?

Answer 1

8 m/s²

Explanation:

`F=m*a\\\\70=m*7 \longrightarrow\ m=10 (kg)\\\\80=10*a\longrightarrow\ a=(80)/(10)=8(m/s^2)\\`

Answer 2

Acceleration is 8 m/s²

Explanation:

Force = mass × acceleration

`{ \sf{F = m * a}} \\ { \sf{70 = m * 7}} \\ { \sf{m = 10 \: kg}}`

» mass is 10 kg

when force is 80N:

`{ \sf{F = m * a}} \\ { \sf{80 = 10 * a}} \\ { \sf{a = (80)/(10) }} \\ \\ { \sf{a = 8 \: {ms}^( - 2) }}`