A professional baseball player can pitch a baseball with a velocity of 44.7m/s towards home plate. If a baseball weighs 1.4 N, how much momentum does it have when it hits the catcher units

Two people are rowing a boat at a speed of 9 m/s. in 3 seconds, they dock the boat at a pier. what is the boatâs acceleration?

A mercury atom in the ground state absorbs 20.00 electronvolts of energy and is ionized by losing an electron. How much kinetic energy does this electron have after the ionization?

Drag each tile to the correct box. Arrange the objects in order from least to greatest potential energy. Assume that gravity is constant. (Use PE = m * g * h.) 1.) a 15-kilogram stone found at a height of 3 meters 2.

When a tennis ball is thrown against a wall it appears to bounce back with exactly the same speed as it struck the wall. Is momentum conserved for this collision? Explain!

A circuit has a voltage drop of 12 V across a 30 2 resistor that carries a current of 0.8 A. How much power is used by the resistor? Use P = VI. A. 360 W B. 12W C. 9.6 W D. 24 W

Bus A and Bus B leave school on a field trip when a stopwatch reads zero. Bus A travels at a constant 50 km/h, and Bus B travels at a constant 75 km/h. How far are the two buses from school when the stopwatch reads 1.5 h?. a ... Bus A is 76.

When observed from Earth, the wavelengths of light emitted by a star are shifted toward the red end of the electromagnetic spectrum. Why does this redshift occur?

Object A has a length of 3 cm, a width of 10 cm, and a height of 2 cm. Object B is dropped into a graduated cylinder. It displaces 60 mL of water. The volume of object A is:

Is the following sentence true or false? Some information about an object or process may be missing from a model.

If V is a velocity, l a length, and v a fluid property having dimensions of L2T-1, which of the following combinations are qualitatively dimensionless (show work for a through d) : (a) V l v (b) Vl/v (c) V2v (d) V / (l v)