29. A 60-kg girl weighs herself by standing on a scale in an elevator. What does the scale read when (a) the eleva- tor is descending at a constant rate of 10 m/s, (b) the ele- vator is accelerating downward at 2 m/s², and (c) the ele- vator is ascending at 10 m/s but its speed is decreasing by 2 m/s in each second?

On a cold winter day, a car tries to get moving on an icy road but does not get anywhere. What happens? Explain it in terms of forces and motion.

A student, who weighs 400 N, stands on a bathroom scale in an elevator. What will the scale read when the elevator is decelerating while moving downward at 2.15 m/s²?(g = 9.8 m/s²)

> (Figure 1) Three satellites orbit a planet of radius R, as shown in the figure. Satellites S₁ and S3 have mass m. Satellite S₂ has mass 2 m. Satellite S₁ orbits in 250 minutes and the force on S₁ is 10,000 N. You may want to review (Pages 347-351). Figure $,0m O m R 2m 2R 3R 1 of 1 What is the period of S₂? Express your answer to three significant figures and include the appropriate units. T = Submit Part B T = UI μA Value The value should be entered as a single number or in scientific notation. No credit lost. Try again. Part C Submit What is the period of S3? Express your answer to three significant figures and include the appropriate units. ? m ["Η ΒΑ Previous Answers Request Answer Value Min This unit is not recognized. See the list of acceptable units. No credit lost. Try again. ? Previous Answers Request Answer What is the force on S2? Express your answer to three significant figures and include the appropriate units. F = 2.00×104 N

A 70.0-kg man is standing on a scale in an elevator that is accelerating upward at a rate of 2.00 m/s2. What will the scale read?

The gravitational acceleration in space is 0 m/s². Calculate the weight in Newtons of an average human woman (60 kg) in space? 9.8 N 686 N 1.625 N ON 70 N 113.75 N 43.08 N

What is the apparent weight of a 65 kg person standing in an elevator that is accelerating upward at 2.34 m/s2?

An astronaut takes a set of scales to do some measurements while travelling. Before leaving earth, the astronaut stands on the scales and they read "75 kg". Determine what the readings would be in the following circumstances. (You will first need to decide what the scales physically relate to). (a) On the moon where gravity is 1.6 m/s² nds o t tant (b) Near the surface of Jupiter where gravity is 26 m/s? the Tian (of mas m basks in the sen on a dop Which ofe The de of the no fore (c) In the spaceship travelling in between planets the ig lore ain .ont fom an action The direction of the o l foree acting on the ands verically upwants 4 The normal frce tg on he wegh

YOU are in an elevator moving at 14m / s * 2 and weight 71.4Kg your friend takes another elevator and they weights 100 kgbut feels the same force! How fast are they going?

A 5.3-kg rock and a 5.3 x 10-4-kg pebble are held near the surface of the earth. (a) Determine the magnitude of the gravitational force exerted on each by the earth. (b) Calculate the magnitude of the acceleration of each object when released. (a) Frock = Fpebble 1 (b) arock apebble i 1. i i 111