Question

Force is defined as mass times acceleration. Starting with SI base units, derive a unit for force. Using SI prefixes suggest a convenient unit for the force resulting from a collision with a 10-ton trailer truck moving at 55 miles per hour. (Assume 1 second deceleration time)

Answer 1

S.I unit of force is N

Therefore the resulting force = 245872 N

Step-by-step explanation:

F = m × a

`=(m * v)/(t)`

`= (Kg* (m)/(s) )/(s)`

`=(Kg * m)/(s^2)`

=N

S.I unit of force is N

10 ton =10000 kg , 55 miles =88.5139 km and 1 hour = 3600 s

55 mile per hour= 0.0245872 km/s=24.5872 m/s

Here m= 10000 kg, v= 24.5872 m/s and t= 1 s

`F=(10000* 24.5872)/(1) N` = 245872 N

Therefore the resulting force = 245872 N