A 712 kg car is traveling at 5.6 m/s when a force acts on it for 8.4s, changing its velocity to 10.2 m/s. What is the change in kinetic energy?

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.

Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m

Mark saxby is set to kick the field goal to win the state championship for olathe east. he is 47m away from the goalposts, and he kicks the ball at a speed of 25.0m/s at an angle of 30.0°. if the cross bar on the goalposts is 3.00m above the ground, will the ball make it over the cross bar? and if it does make it, by how much will it clear?