5.4 Mass and Weight

For the example, find the acceleration when the farmer’s applied force is 230.0 N.

How much does a 70-kg astronaut weight in space, far from any celestial body? What is her mass at this location?

When you stand on Earth, your feet push against it with a force equal to your weight. Why doesn’t Earth accelerate away from you?

The weight of an astronaut plus their space suit on the Moon is only 250 N. (a) How much does the suited astronaut weigh on Earth? (b) What is the mass on the Moon? On Earth?

A rocket sled accelerates at a rate of $\left(49.0 \text{m}/\text{s}\right)^{2}$. Its passenger has a mass of 75.0 kg. (a) Calculate the horizontal component of the force the seat exerts against his body. Compare this with his weight using a ratio. (b) Calculate the direction and magnitude of the total force the seat exerts against his body.

A body of mass 2.00 kg is pushed straight upward by a 25.0 N vertical force. What is its acceleration?

A body with a mass of 10.0 kg is assumed to be in Earth’s gravitational field with $g = 9.80 \text{m}/\text{s}^{2}$. What is the net force on the body if there are no other external forces acting on the object?

A baseball catcher is performing a stunt for a television commercial. He will catch a baseball (mass 145 g) dropped from a height of 60.0 m above his glove. His glove stops the ball in 0.0100 s. What is the force exerted by his glove on the ball?