A ball is thrown straight up from the ground with an unknown velocity. It returns to the ground after 4.0seconds. With what velocity did it leave the ground?

The cheetah, which is the fastest land mammal, can accelerate from 0.0 mi/hr to 70.0 mi/hr in 3.0 seconds. What is the acceleration of the cheetah? Give your answer in units of mph/sec.

Which of the following situations would result in angular clasts? a) transport of the clasts over long distance b) working of clasts by waves on a beach c) steep slopes in a mountain d) dunes formed by wind

An object has a kinetic energy of 77j and a mass of 52 kg, how fast is the object moving?

A stone is dropped from the top of a cliff. the splash it makes when striking the water below is heard 3.5 s later. the speed of sound in air is 343 m/s.

If element X has 90 protons, how many electrons does it have?

If the energy stored in the fully charged battery is used to lift the battery with 100-percent efficiency, what height is attained? Assume that the acceleration due to gravity is 9.8 m/s2m/s2 and is constant with height

How does the mass of an astronaut change when she travels from earth to the moon? how does her weight change?

If an object has a mass of 20 grams and a volume of 40 cm3, what is its density in g/cm3?

Discuss how systematic and random errors influence the precision and accuracy of an experiment.

Matthew rolls a bowling ball with a speed of 2 meters/second. The ball hits the pins with 1.8 joules of kinetic energy. The mass of the bowling ball is kilograms. NextReset