Question

Someone is not paying attention while speeding down the tramway. Their truck has a mass of 2000 kg. Going a whopping 34.1 m/s (76.3 mph) the truck crashes into a stationary Corolla (mass of 1100 kg). If the truck comes to a complete stop, how fast does the Corolla slide forward when it is hit

Answer 1

Answer:

Explanation:

This question comes from Conservation of Momentum

M1=2000kg

U1=34.1ms^-1

Now this truck crashes into a stationary corolla

Since its stationary

U2=0

M2=1100kg

The Moving Truck came to a complete stop(or rest)

Its Final Velocity V1=0

Mass still remains the same

The corolla will move with a speed V2

Applying the formula for conversation of Momentum

M1U1 + M2U2 = M1V1 + M2V2

2000(34.1) + 1100(0) = 2000(0) + 1100(V2)

2000(34.1) = 1100(V2)

V2 = 2000(34.1)/1100

V2 =62ms^-1