A 2.0-kg ball has a momentum of 25kg. m/s what is the ball's speed?

Which of the following has the largest kinetic energy? A. a 10kg dog running down the street at 30mph B. a tightrope walker slowly crossing niagara falls C. a 0.02kg bullet moving down the barrel at 800mph D. a semi truck parked in a parking lot

If the ball hits olaf and bounces off his chest horizontally at 8.50 m/s in the opposite direction, what is his speed vf after the collision? express your answer numerically in meters per second.

What is the medium that sounds waves travel through when a person speaks

A train travels at a speed of 24 m/s. Then it slows down uniformly at until it stops. What distance does the train travel while slowing down?

Thermal conductivity is the property of a material that shows how well the material can conduct heat. The list below shows the thermal conductivities of some common materials. Conductivities of Common Materials copper 401 aluminum 237 glass 1.

An atom of sodium has a larger mass than an atom of neon. How is this possible when neon has so many more valence electrons? What particles make up most of the mass of an atom? What takes up most of the volume of an atom?

Sara takes a 40-minute bus ride from her home to her grandparents' home, which is 8 km away. What is the average speed of the bus?

Power is equivalent to the energy released divided by the time taken to release the energy. true false

Consider the following four cases of a person applying force to an object: (1) a force of 5 N directed parallel to the floor is pulling a box over a distance of 1 m.

What is the maximum possible torque on a sphere if the electric field between the transparent plates is 4.4*105 n/c?