An object is hovering about the surface of the earth. It begins to experience a gravitational acceleration of 2.0 m/s2. How high is it above the surface of the earth?

The NEXT morning, you wake up in a strange room yet again, and this time you drop a ball from a height of 1.54 m above the floor. The ball hits the floor 0.392 s after your drop it. You guess that you must have been taken to an alien planet with gravity different from Earth s. What is this planet s g (that is, the magnitude of the acceleration due to gravity on this planet)?     10.0 m/s^2     15.0 m/s^2     30.0 m/s^2     20.0 m/s^2

The NEXT morning, you wake up in a strange room yet again, and this time you drop a ball from a height of 1.40 m above the floor. The ball hits the floor 0.160 s after your drop it. You guess that you must have been taken to an alien planet with gravity different from Earth s. What is this planet s g (that is, the magnitude of the acceleration due to gravity on this planet)?     54.7 m/s^2     82.1 m/s^2     207.9 m/s^2     109.4 m/s^2

A car is traveling horizontally at 28.7 m/s at the moment it drives off the top of a cliff. The car strikes the ground 0.538 seconds after leaving the top of the cliff. Assuming air-resistance can be ignored, how tall is the cliff?

At t = 0, a particle leaves the origin with a velocity of 9.0 m/s in the positive y direction and moves in the xyplane with a constant acceleration of (2.0i −4.0j) m/s2. At the instant the x coordinate of the particle is 15 m, what is the speed of the particle (in m/s)?

You encounter a strange cosmic string in outer space.  The string extends along the x axis from x = 0 m to x = 4.6 x 104 m.  You are located at x = -5.4 x 104 m.  You experience a gravitational field equal to 9.6 x 10-6 N/kg at this location.  Assuming the string has a constant linear mass density, calculate this linear mass density, in units of 105kg/m.  Use G = 6.7 x 10-11 N m2/ kg2. (Please answer to the fourth decimal place - i.e 14.3225)

The standard acceleration of gravity at the earth's surface is g=9.81m/s2. Convert this acceleration to units of inches/min2.

A 1000 kg satellite orbits the Earth at a distance of 4 times the Earth's radius measured from above the Earth's surface. The radius of the Earth is 6.38x 10°m and the mass of the Earth is 5.98x1024kg and the gravitational constant G= 6.67x10-11 Nm²/kg². What is the speed at which the satellite orbits the earth? 3540 m/s O 3780 m/s O 4110 m/s 3130 m/s 2920 m/s O 4370 m/s 3960 m/s O 3350 m/s

A skater with mass 66 kg is skating on a horizontal surface at a constant speed 4.2 m/s. There is a ramp ahead, and the skater has just enough speed to make it to the top of the ramp (meaning the speed at the top of the ramp is 0 m/s). What is the height of the ramp in the unit of meters? Use g = 10 m/s2 for the acceleration due to gravity.

You are an astronaut exploring an unknown planet, with a mass of 4.02×1024 kg, and a radius of 4,148 km.  Draw a free body diagram of the forces acting as you stand on the surface. What is the magnitude of the acceleration due to gravity at the surface of the planet in m/s2?  Calculate your answer to 2 sf.