Select all that apply.
Which of the following are appropriate acceleration units?
km/hr2,
m/s/s,
ft/s,
miles/hr/min,
sec/km/m

a.km/hr2

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Asked 11/7/2012 8:00:37 AM

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The calculation of momentum involves _____.
mass and velocity
mass and acceleration
motion
distance and velocity

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Updated 44 days ago|5/14/2016 8:08:09 AM

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174 cm = _____ m
1.74
17.4
1740
17,400 **Weegy:** 174 cm = 1.74 m (More)

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Expert Answered

Asked 11/6/2012 12:42:37 PM

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A child kicks a soccer ball across the ground. The ball travels 10.0 meters in 0.56 seconds. What is the speed of the ball?
5.6 m/s
1.79 m/s
17.9 m/s
0.056 m/s User: Danny sails a boat downstream. The wind pushes the boat along at 21 km/hr. The current runs downstream at 15 km/hr. What is the actual velocity of the boat?
6.0 km/hr, downstream
1.4 km/hr, downstream
310 km/hr, downstream
36 km/hr, downstream **Weegy:** 36 km/hr
The velocity vectors are going in the same direction, so you can add them. **User:** Danny lowers the sails on his boat. He paddles upstream at 19 km/hr. The current is still running downstream at 15 km/hr. What is the actual velocity of the boat?
34 km/hr, downstream
34 km/hr, upstream
4 km/hr, downstream
4 km/hr, upstream **Weegy:** 34 km/hr, upstream **User:** Jesse travels 3.0 meters east and then turns and travels 4.0 meters north. What distance did Jesse travel?
1 m
5 m, northeast
7 m
7 m, northeast **Weegy:** The distance Jesse traveled is 7 m. His displacement however is 5 m. (More)

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Asked 11/6/2012 2:01:28 PM

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What is speed?
rate of motion
rate and direction of motion
the direction of motion
the force of motion User: Jamal is skating on a sidewalk. His initial velocity is 0.0 m/s; 35 seconds later his velocity is 5.0 m/s. What is his acceleration?
7 m/s
-7 m/s
0.14 m/s/s
-0.14 m/s/s **Weegy:** 0.14 m/s/s **User:** A car's acceleration is negative. This means the car is _____.
slowing down
speeding up
changing direction
traveling in a circle **Weegy:** a.slowing down **User:** A rocket's acceleration is 6.0 m/s2. Assuming it starts at 0 m/s, how long will it take for the rocket to reach a velocity of 42 m/s?
250 s
0.14 s
7.0 s
290 s **Weegy:** 7 seconds. 42/7 **User:** A ride at an amusement park moves the riders in a circle at a rate of 6.0 m/s. The radius of the ride is 9.0 meters. Which of the following shows the direction of the acceleration of the riders?
a
b
c
d **Weegy:** k / Discussion question B. An artist's conception of a rotating space colony in the form of a giant wheel. [ A person living in this noninertial frame of reference has an illusion of a force pulling her outward, toward the deck, for the same reason that a person in the pickup truck has the illusion of a force pulling the bowling ball. By adjusting the speed of rotation, the designers can make an acceleration |v|2/r equal to the usual acceleration of gravity on earth. On earth, your acceleration standing on the ground is zero, and a falling rock heads for your feet with an acceleration of 9.8 m/s2 . A person standing on the deck of the space colony has an upward acceleration of 9.8 m/s2 , and when she lets go of a rock, her feet head up at the nonaccelerating rock. To her, it seems the same as true gravity. ] (More)

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Asked 11/7/2012 8:04:23 AM

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A ride at an amusement park moves the riders in a circle at a rate of 6.0 m/s. If the radius of the ride is 9.0 meters, what is the acceleration of the ride?
4.0 m/s2
0.67 m/s2
0.075 m/s2
54 m/s2 **Weegy:** Formula a = v^2 / r
Here v = 6, r = 9, so a = 6^2 / 9 = 36/0 = 4.
Hence 4.0 m/s2 (More)

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Expert Answered

Asked 11/7/2012 8:06:18 AM

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