How much heat energy is used to raise 3.4 kg of an object from a temperature of 15 degree celsius to 32 degree celsius if it has a specific heat capacity of 380 J/kgK

Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?

In what direction does an applied force move an object

If a car has a speed of 20 m/s, how long will it take to go 155 m? a. 3100 s b. 135 s c. 2.1 s d. 7.8 s