Weegy: Momentum = mass times velocity. User: Jamal blasts an air-horn to start a race. Lewis hears the horn from his house 274 meters away. Given that sound travels through air at 340 m/s, how long did it take the sound to travel from Jamal to Lewis?
440 s
0.81 s
1.2 s
66 s Weegy: The sound travelled from Jamal to Lewis in 0.81 seconds. User: The source of the centripetal force that arises when a runner rounds a curve on a track is _____.
tension
friction
weight
gravity User: A force of 8,480 N is applied to a cart to decelerate it at a rate of 32.0 m/s2. What is the mass of the cart?
865 kg
377 kg
265 kg
27.0 kg Weegy: mass of the cart m = F / a = 8480 / 32 = 265 kg
Answer is 265 kg
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Weegy: it's a heptagon has an interior measure of 900°. User: Which shape has four congruent sides and two sets of parallel sides Weegy: A Rhombus has four congruent sides and two sets of parallel sides. User: If each angle in a pentagon is the same measure, what is that measure Weegy: if it is a regular pentagon (all angles the same), then each angle is 540° / 5 = 108°. (More)

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