Homework 1

In science, facts

Which of the following is a scientific statement?

How might the demand for reproducibility in science have the long-run effect of compelling honesty?

A kilogram is a measure of an object's

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

Compared with a 1-kg block of solid iron, a 2-kg block of solid iron has the same

Your weight is

One object that has twice as much mass as another object also has twice as much

The unit m/s2 is actually

A 1-kg mass at the Earth's surface weighs about

An object weighs 30 N on Earth. A second object weighs 30 N on the Moon. Which has the greater mass?

An object is pulled northward with a force of 10 N and southward with a force of 15 N. The magnitude of the net force on the object is

Which has zero acceleration? An object

An object in mechanical equilibrium is an object

When you stand at rest on a pair of bathroom scales, the readings on the scales will always

Hang from a pair of gym rings and the upward support forces of the rings will always

A man weighing 800 N stands at rest on two bathroom scales so that his weight is distributed evenly over both scales. The reading on each scale is

A 300-kg bear grasping a vertical tree slides down at constant velocity. The friction force between the tree and the bear is

The amount of friction that occurs when two material surfaces slide against each other depends on

If you push a crate across a level floor at constant speed, the friction between the crate and the floor is

The two measurements necessary for calculating average speed are

The average speed of a horse that gallops a distance of 10 km in a time of 30 min is

What is the acceleration of a car that maintains a constant velocity of 100 km/h for 10 s?

The unit N is actually

The unit m/s is actually