Why does a curve on a distance-time graph indicate acceleration

Physics

1 answer:

Anon25 [30]4 years ago

6 0

... Speeding up or slowing down are two of the three forms of acceleration.

... The SLOPE of the line on a distance/time graph is the object's speed.

... If the graph is curved, then its slope is changing.

That means the object's speed is changing.

That means the object is accelerating.

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a ball of mass 15 kg moving at +20 m/s collides head-on with another ball of mass 10 kg moving at -15 Ms. if after collision the

Karo-lina-s [1.5K]

Given

m1 = 15kg

vi1 = +20 m/s

vf1 = +5 m/s

m2 = 10 kg

vi2= -15 m/s

vf2 = ?

Procedure

Conservation of momentum, general law of physics according to which the quantity called momentum that characterizes motion never changes in an isolated collection of objects; that is, the total momentum of a system remains constant.

$\begin{gathered} m_1v_{i1}+m_2v_{i2}=m_1v_{f2}+m_2v_{f2} \\ 15kg\cdot20m/s+10\operatorname{kg}\cdot-15m/s=15\operatorname{kg}\cdot5m/s+10\operatorname{kg}\cdot v_{f2} \\ 150-75=10v_{f2} \\ v_{f2}=75/10 \\ v_{f2}=7.5\text{ m/s} \end{gathered}$

The speed of the 10kg Ball is 7.5m/s

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1 year ago

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natali 33 [55]

Answer:

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Explanation: none

8 0

3 years ago

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It takes a car 1.75 h to go from mile marker 10 to mile marker 115. What is the average speed of the car? Someone who took this

givi [52]

The distance from mile-mark 10 to mile-mark 115 is (115-10) = 105 miles.