When a runner increases her speed from 75 m/s to 115 m/s in 25 s,her acceleration is _____

1 answer:

8 0

The acceleration would actually be 1.6 m/s^2. Acceleration= final velocity-initial velocity/time taken. When you do that formula it comes out to equal that.

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At time t = 0 an object is traveling to the right along the axis at a speed of 10 m/s with acceleration -2.0 m/s2. Which stateme

Fittoniya [83]

Answer:

C. The object will slow down, momentarily stopping, then pick up speed moving to the left.

Explanation:

Given that

Speed of the object = 10 m/s ( right direction)

Acceleration ,a= - 2 m/s

A negative sign shows that acceleration is in the opposite direction to the speed.

We know that if speed and acceleration is in the opposite direction then the final speed of the objects becomes zero. for a moment and it will increase in the opposite direction.

Therefore the answer is C

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4 years ago

An empty plastic or glass dish being removed from a microwave oven is cool to the touch. How can this be possible

Luda [366]

Plastic and glass are both poor heat conductors. They are insulators which means their electrons don’t move as freely as conductors.

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3 years ago

speed is the ratio of the distance an object moves to a. the direction the object moves. b. the amount of time needed to travel

Dennis_Churaev [7]

It is the ratio of distance an object moves to the amount of time needed to travel the distance. Option b.

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