On earth, it takes 1 hr for the hand on a clock to move from 1PM to 2PM. The clock is moved to the moon, where the acceleration due to gravity is 1.63 m/s2. How long does it take the hand on the clock to move from 1PM to 2PM on the moon?

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 particle has a velocity of v= (3i+5j)m/s and a constant acceleration of a=(-1.5i-4.5j)m/s^2 What is its velocity after 2 seconds? Is it moving faster or slower after 2 seconds?

Case 1: A DJ starts up her phonograph player. The turntable accelerates uniformly from rest, and takes t1 = 11.6 seconds to get up to its full speed of f1 = 78 revolutions per minute. Case 2: The DJ then changes the speed of the turntable from f1 = 78 to f2 = 120 revolutions per minute. She notices that the turntable rotates exactly n2= 12 times while accelerating uniformly.  t1 = 11.6 secondsn2 = 12 times  a. Calculate the angular speed described in Case 1, given as f1 = 78 revolutions per minute, into units of radians/second. b. How many revolutions does the turntable make while accelerating in Case 1?  c. Calculate the magnitude of the angular acceleration of the turntable in Case 1, in radians/second2.  d. Calculate the magnitude of the angular acceleration of the turntable (in radians/second2) while increasing to 120 RPM (Case 2).  e. How long (in seconds) does it take for the turntable to go from f1 = 78 to f2 = 120 RPM?

A ball rolling along the floor with velocity 0.41 m/s goes from x = 1.35 m to x = 9.8 m. How much time does this take?

The position of a dragonfly that is flying parallel to the ground is given as a function of time by 7 = [2.90 m + (0.0900 m/s²)t²] i – (0.0150 m/s³)t³ j. Part B At the time calculated in part (a), what is the magnitude of the acceleration vector of the insect? Express your answer with the appropriate units. xa μÅ Xb a = 0.062 a b X.10n m Submit Previous Answers Request Answer ?

A space probe on the surface of Mars sends a radio signal back to the Earth, a distance of 6.65 ✕ 107 km. Radio waves travel at the speed of light (3.00 ✕ 108 m/s). How many seconds does it take for the signal to reach 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 2.15 m above the floor. The ball hits the floor 0.265 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)?     61.2 m/s^2     30.6 m/s^2     45.9 m/s^2     97.9 m/s^2

You are to drive to an interview in another town, at a distance of 300km. You leave for the interview 3 ¼ hours before it is scheduled, planning to drive at 100 km/hr. You drive at that speed for the first 100 km. Then, construction work on the road causes you to drive at 40 km/hr for 60 km. At what constant speed must you drive the rest of the way to get to the interview on time.

at an instant in time a particles velocity is v = (2.00i + 1.00j) m/s, while it’s acceleration is a = -1.00i m/s^2. at what rate is the particle speeding up / slowing down and what’s the radius of the curve on the particles trajectory