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You’re at rest in a hammock when a hungry mosquito sees you as lunch, while a 2-m/s breeze is blowing. If the mosquito joins you for lunch, it should first hover over you by flying

When you push an object a certain distance while applying twice the force, you do

You do work on a cart loaded with groceries. If you do this work in one-third the usual time, you expend

Toss a rock at an angle into the air and it follows a curved path. Its velocity at any instant can be resolved into horizontal and vertical components. Which of these components changes with time, and why?

A bucket of cement is raised by a rope at constant speed at a construction site. Compared with the force of gravity on the bucket, the upward force supplied by the rope is

The average speed of Daisy running a distance of 2 km in a time of one-half hour is

With no air resistance a projectile fired horizontally maintains its horizontal component of velocity because

Passengers in a high-flying jumbo jet feel their normal weight in flight, whereas passengers in an orbiting space vehicle do not because they are

A woman who normally weighs 400 N stands on top of a very tall ladder so she is one Earth-radius above Earth’s surface. What is her weight there?

A 1000-kg car accelerates at 2 m/s2. What is the net force exerted on the car?