A greyhound's velocity changes from rest to 19 m/s in 2 seconds. What is the greyhound's average acceleration?

a) 2 m/s2

b) 9.5 m/s2

c) 19 m/s

d) 38 m/s

Suppose that the resistive force of the air on a skydiver can be approximated by f = - bv2. If the terminal velocity of an 82.0 kg skydiver is 33.4 m/s, what is the value of b (in kg/m) ?

When a pair of balanced forces acts on an object, the net force that results is A. greater in size than both forces combined. B. equal to zero. C. greater in size than one of the forces. D. equal in size to one of the forces.

Which of the following has the greatest amount of kinetic energy a) slice of pizza b) a person at the top of the stairs c) wind d) a book on a table

Which law states, "an induced emf gives rise to a current whose magnetic field opposes the change in magnetic flux that produced it."?

The products of an object's mass and velocity is its? a) centripetal force b) momentum c) net force d) weight

A racquet ball with mass m = 0.241 kg is moving toward the wall at v = 13.7 m/s and at an angle of θ = 34° with respect to the horizontal.

What type of plate boundary would be found along the coast line near Japan's volcanic mountain ranges

When the current in a toroidal solenoid is changing at a rate of 0.0270 A/s, the magnitude of the induced emf is 12.5 mV. When the current equals 1.30 A, the average flux through each turn of the solenoid is 0.00245 Wb.

A spring tide can occur at what day and month?

For a given launch velocity, at which launch angle does the projectile undergo the maximum horizontal displacement