Physics, asked by nansambagrace0, 9 months ago

A 7 tonne truck initially moving at a velocity of 50m / s accelerates to 110m / s in 3 seconds Calculate the force on the truck that causes the velocity to change

Answers

Answered by amitnrw
1

140 kN  force on the  7 tonne truck that causes the velocity to change from 50 m/s to 110 m/s in 3 secs

Explanation:

Force =  Mass * acceleration

=> F  = m a

a = dv/dt

=> F  = M dv/dt

dv/dt  = ( 110 - 50)/3  = 20  m/s²

m =  7 tonne  = 7000 kg

=> F   = 7000 * 20

=> F = 140,000  N

=> F = 140 kN

140 kN  force on the truck that causes the velocity to change

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