1. a stone is thrown straight upward with a speed of 60.0m/s. how high does it go? (take g to be 9.8m/s².)
2. an object is projected vertically upwards with a velocity of 39.2m/s. find the times when displacement of the object is 58.8m. (take g to be 9.8m/s².)
3. two girls start running straight toward each other from two points 200m apart. one runs with a speed of 4.0m/s, and the other moves at 16.0m/s. how close are they from the slower one's starting point when they meet?
4. in a television electrons shot down the picture tube and strike fluorescent material on the screen, causing light to be given off and producing a picture. suppose that in a certain set, the electrons are accelerated from rest to 2.0 x 10⁸m/s in about 1.40cm. what is the acceleration of the electrons?
5. convert 106km/h to m/s.
6. define displacement.
7. a car moving at 4m/s along the x-axis accelerates uniformly to a velocity of 24m/s in 10 seconds. calculate;
(I) it's acceleration.
(ii) it's displacement in the 10 seconds.
(iii) the final velocity it would attain after 30 seconds if it continued it's motion at this rate.
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One object has a mass of 1 kg and another object has a mass of 3 kg. if the speeds are the same, which of the following is true about their kinetic energy?
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Aswimmer is determined to cross a river that flows due south with a strong current. initially, the swimmer is on the west bank desiring to reach a camp directly across the river on the opposite bank. in which direction shoud the swimmer head? a. the swimmer should swim southeast. b. the swimmer should swim south. c. the swimmer shuold swim northeast. d. the swimmer should swim due north. e. the swimmer should swim due east.
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1. a stone is thrown straight upward with a speed of 60.0m/s. how high does it go? (take g to be 9.8...
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