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sukhopar [10]
4 years ago
13

What is the gravitational force between two 60.0 kg people sitting 100 m apart?

Physics
1 answer:
Finger [1]4 years ago
7 0

Answer:

2.4 × 10^(-11) N

Explanation:

F = Gm²/r²

F = 6.67×10^(-11) × 60² / 100²

= 2.4×10^(-11) N

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i think the answer is 9.

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If the ankylosaurs starts running and accelerates at 1.3m/s^2 for 3 seconds how far does he make it before the velociraptor catc
sveta [45]

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Acceleration = 1.3 m/s²

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Distance run: 1.3*3²/2 = 5.85 m

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3 years ago
BRAINLIEST PLEASE: You throw a small rock straight up from the edge of a highway bridge that crosses a river. The rock passes yo
Sophie [7]

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3 0
2 years ago
A light-rail commuter train accelerates at a rate of 1.35 m/s2. How long does it take to reach its top speed of 80.0 km/h, start
Alona [7]

Answer:

16.46 seconds.

13.46 seconds

2.67 m/s²

Explanation:

Acceleration = a = 1.35 m/s²

Final velocity = v = 80 km/h = 80\frac{1000}{3600}=\frac{200}{9}\ m/s

Initial velocity = u = 0

Equation of motion

v=u+at\\\Rightarrow \frac{200}{9}=0+1.35t\\\Rightarrow t=\frac{\frac{200}{9}}{1.35}=16.46\ s

Time taken to accelerate to top speed is 16.46 seconds.

Acceleration = a = -1.65 m/s²

Initial velocity = u = 80 km/h= 80\frac{1000}{3600}=\frac{200}{9}\ m/s

Final velocity = v = 0

v=u+at\\\Rightarrow 0=\frac{200}{9}-1.65t\\\Rightarrow t=\frac{\frac{200}{9}}{1.65}=13.46\ s

Time taken to stop the train from top speed is 13.46 seconds

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Time taken = t = 8.3 s

Final velocity = v = 0

v=u+at\\\Rightarrow 0=\frac{200}{9}+a8.3\\\Rightarrow a=\frac{-\frac{200}{9}}{8.3}=-2.67\ m/s^2

Emergency deceleration is 2.67 m/s²

3 0
3 years ago
What an objects movement is slowing down it is called ____acceleration
konstantin123 [22]

Explanation:

When an object slows down, its acceleration is opposite to the direction of its motion. This is known as deceleration.

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