Find the currents flowing in the circuit in the figure below. (assume the resistances are r1 = 8 ω, r2 = 10 ω, r3 = 12 ω, r4 = 15 ω, r1 = 0.5 ω, r2 = 0.25 ω, r3 = 0.75 ω, and, r4 = 0.25 ω.)

Abatter hits a 0.140-kg baseball that was approaching him at 30 m/s and, as a result, the ball leaves the bat at 40 m/s in the reverse of its original direction. the ball remains in contact with the bat for 2.0 ms. what is the magnitude of the average force exerted by the bat on the ball?

Which of the the following are examples of projectile motion of both projectile motion and two dimensional motion

During a car accident, a 125kg driver is moving at 31m/s and in 1.5s is brought to rest by an inflating air bag. what is the magnitude of the change in momentum to the driver