Which question should Trudy write

A horse stands on a flat surface if the horse has a mass of 186 kg what is the normal force acting on it

The conservation of energy principle applies to a. all systems. b. open systems. c. closed systems. d. Ideal gas systems.

What two instruments in a car can be used to measure the car's average speed?

How do people use telescopes to the underlying scientific ideas?

Some plants disperse their seeds when the fruit splits and contracts, propelling the seeds through the air. The trajectory of these seeds can be determined with a high-speed camera.

What is the kinetic energy of a 2 kg snowball thrown through the air at 5 m/s?

A 5.00*105-kg subway train is brought to a stop from a speed of 0.500 m/s in 0.400 m by a large spring bumper at the end of its track. what is the force constant k of the spring

A moving object always has energy in its?

What is the volume of a box that is 12 cm long, 2 cm wide, and 3 cm high?

Suppose a child drives a bumper car head on into the side rail, which exerts a force of 4000 N on the car for 0.200 s. (a) What impulse is imparted by this force?