A girl pulls a sled with a force of 15 N over a distance of 3 m. What is the kinetic energy of the sled after she pulls it? Assume there is no friction.

Which of the following statements is true? A. In an endothermic reaction, the energy of the products is the same as the energy of the reactants. B. In an endothermic reaction, the energy of the products is less than the energy of the reactants. C.

A 410-g cylinder brass is heated to 95 C and placed in a calorimeter containing 335 g of water at 25 C. The water is stirred, and its highest temp is recorded as 32 C. from the thermal energy determine the specific heat of brass.

A dragster runs the quarter mile in 8.96 s. What is the car's velocity (in ft/s) at the finish line?

Convert 9 years to minutes. I need the answer immediately if possible

Bob goes on a run and speeds up from rest at a rate of 0.25 m/s for 15 seconds. After reaching his final velocity, Bob continues running at a steady pace. How long will Bob run if he is able to maintain a constant speed for 3 minutes

Two railroad cars, each of mass 6500 kg and traveling 80 km/h in opposite directions, collide head-on and come to rest. how much thermal energy is produced in this collision?

What is a result of using a machine?

A boy rides motorbike with velocity of 20 m/s He accelerates his motorbike to a velocity of 30 m/s for 5 second. Calculate the acceleration produced in the motorbike. [Ams 2ms

How is a star's emission spectrum used to study stars?

A 52.0 kg skateboarder does a trick on a half-pipe. During the trick, he reaches a speed of 8.90 m/s. The radius of the half-pipe ramp is 3.00 meters. What is the minimum centripetal force necessary to keep the skater on the ramp?