A car of mass 1750 kg moving at 20 m/s to the north, rearends a truck of mass 7000 kg that is moving in the same direction at 5 m/s. The vehicles stick together after the impact. What is the velocity of the wreck after the collision?

Aparticle initially moving east with a speed of 20.0 m/s, experiences an acceleration of 3.95 m/s, north for a time of 8.00 s. what was the speed of the particle after this acceleration, in units of m/s? give the answer as a positive number.

Abucket full of water weights 4 kg and water well is 10m deep. a girl draws water from the well. it takes the girl 3 minutes to draw a bucket full of water from the well. what is the power of the girl?

The material that keeps its new shape after it is stretched is called?