Chapter 8, Problem 3P

A barefoot field-goal kicker imparts a speedof 27 m/s to a football initially at rest.If the football has a mass of 0.59 kg and thetime of contact with the ball is 0.034 s, whatis the magnitude of the force exerted by theball on the kicker’s foot?Answer in units of N.

A 70 kg bicyclist is riding her 15 kg bicycle downhill on a road with a slope of 80without pedaling or braking. The bicyclist has a frontal area of 0.45 m2and a dragcoefficient of 1.1 in the upright position, and a frontal area of 0.4 m2and a dragcoefficient of 0.9 in a racing position. If the downhill speed of the bicyclist(terminal velocity) can be determined when the total force acting on the “body” inthe direction of movement is equal to zero, determine the percentage of downspeed that she can be increased when she is in a racing position. Air temperatureis 150C and disregarding the rolling resistance and friction at the bearing.

What net external force is exerted on a 1500-kg artillery shell fired from a battleship if the shell is accelerated at 2.60 ✕ 104 m/s2? (Enter the magnitude.) What is the magnitude of the force exerted on the ship by the artillery shell?

Two hockey players strike a puck of mass 0.165 kg with their sticks simultaneously, exerting forces of 1.17  103 N, directed west, and 1.02  103 N, directed 30.0° east of north. Find the instantaneous acceleration of the puck.

What is the magnitude of the average force, in newtons, exerted on a 0.0295-kg bullet to accelerate it to a speed of 590 m/s in a time of 1.85 ms?

If Alice who has a mass of 55.0 KG and is it raining at 25.0 m/s had not been wearing a seatbelt and not had an air bag then windshield would have stopped her head in 0.002s. What average force would the windshield have exerted on her?

If the only forces acting on a 2.0kg mass are F1=(3i-8j)N and F2=(5i+3j)N, what is the magnitude of the acceleration of the particle?

A bullet with a mass of 20.0 grams is fired from a gun with a 10.0 cm barrel at a velocity of 300.0 m/s. Assuming it starts from rest and accelerates uniformly, what is the magnitude of the force exerted on the bullet?

What net external force is exerted on a 1100-kg artillery shell fired from a battleship if the shell is accelerated at 2.40 x 10^4 m/s^2 ? What force is exerted on the ship by the artillery shell?