F=ma Question Preview (ID: 35420)


Newtons 2nd Law. TEACHERS: click here for quick copy question ID numbers.

14. A 100 kg runner exerts a force of 90 N. What is the acceleration of the runner?
a) 1.11 m/s2
b) 9000 m/s2
c) .9 m/s2
d)

A crate is dragged across an ice covered lake. The box accelerates at 0.87 m/s2 and is pulled by a 100 N force. What is the mass of the box?
a) 114.9 m/s2
b) .0087 m/s2
c) 87 m/s2
d)

3 women push a stalled car. Each woman pushes with a 44 N force. What is the mass of the car if the car accelerates at 0.2 m/s2?
a) 220kg
b) 660 kg
c) 26.4 kg
d) 8.8 kg

A tennis ball, 0.654 kg, is accelerated at a rate of 155 m/s2 when hit by a professional tennis player. What force does the player's tennis racket exert on the ball?
a) 101.4 N
b) .0042 N
c) 237 N
d)

A little boy pushes a wagon with his dog in it. The mass of the dog and wagon together is 45 kg. The wagon accelerates at 0.85 m/s2. What force is the boy pulling with?
a) 52.9 N
b) 38.25 N
c) .0189 N
d)

Zack is pushing a huge rock (mass=125kg) in his yard. Once it is moving it accelerates at .13 m/sec^2⁡〖East.〗 Zack is able to apply 55 N of force, what is the frictional force between the rock and the ground?
a) 38.75 N
b) 71.25 N
c)
d)

A worker is moving a large crate (mass = 250kg). Once it is moving it accelerates at .22 m/sec^2⁡〖North.〗 The worker is able to apply 325 N of force, what is the frictional force between the crate and the floor?
a) 270 N
b) 380 N
c)
d)

A child pushes her toy with a force of 5 Newtons. The toy accelerates to .05 meters/sec^2. What is the mass of the toy?
a) 100 kg
b) .25 kg
c) .01 kg
d)

A woman pushes a box (mass: 33 kilograms). The static friction between the box and the ground is 27 Newtons, while the kinetic friction is 9 Newtons. With what force must she push the box in order to get it to accelerate at 1.2 m/s2 to the north?
a) 48.6 N
b) 9.03 N
c) 18.5 N
d)

A woman pushes a box (mass: 33 kilograms). The static friction between the box and the ground is 27 Newtons, while the kinetic friction is 9 Newtons. With what force must she push the box in order to get it moving?
a) a little more than 27 N
b) a little more than 9 N
c)
d)

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