Exam 4: Newtons Laws of Motion

Two people, one twice as massive as the other, attempt a tug-of- war with 12 meters of massless rope on frictionless ice. After a brief time, they meet. The heavier person slides a distance of

A vehicle that weighs 4000 N on the surface of the Earth is travelling in outer space at a speed of 200 m/s. The smallest constant force that must be applied to stop it in 20 seconds is

A automobile and a baby carriage traveling at the same speed collide head-on. The impact force is

Compared to a 1-kg block of solid iron, a 2-kg block of solid iron has twice as much

The brakes of a speeding truck are slammed on and it skids to a stop. If the truck were heavily loaded so that it had twice the total mass, the skidding distance would be

A person is attracted toward the center of the Earth by a 500-N gravitational force. The Earth is attracted toward the person with a force of

The force of friction on a sliding object is 10 newtons. The applied force needed to maintain a constant velocity is

When you relax at rest with your left foot one bathroom and your right foot on a similar scale, each of the scales will

Strange as it may seem, it is just as hard to accelerate a car on a level surface on the moon as it is here on the Earth. This is because

An object is propelled along a straight-line path by a force. If the net force were doubled, the object's acceleration would be

A bag of groceries has a mass of 10 kilograms and a weight of

A 10-kilogram block with an initial velocity of 10 m/s slides 10 meters across a horizontal surface and comes to rest. It takes the block 2 seconds to stop. The stopping force acting on the block is About

A 10-kilogram block is pushed across a horizontal surface with a horizontal force of 20 N against a friction force of 10 N. The acceleration of the block in meters per second per second is

In which case would you have the largest mass of gold? If your chunk of gold weighed 1 N on the

During the time of the year when the Earth starts moving closer to the sun, the sun

An coconut and a feather fall from a tree through the air to the ground below. The amount of air-resistance force is

A car traveling at 22 m/s comes to an abrupt halt in 0.1 second when it hits a tree. What is the deceleration in meters per second per second of the car?

The human body can, under certain conditions, withstand an acceleration of 10 g. What net force would produce this acceleration of a 50-kg person?

If a non-rotating object has no acceleration, then we can say for certain that it is

A sack of potatoes weighing 200 N falls from an airplane. As the velocity of fall increases, air resistance also increases. When air resistance equals 200 N, the sack's acceleration in meters per second per second is