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velikii [3]
4 years ago
13

In a video game, a ball moving at 0.6 meter/second collides with a wall. After the collision, the velocity of the ball changed t

o -0.4 meter/second. The collision takes 0.2 seconds to occur. What’s the acceleration of the ball during the collision? Use .
Physics
1 answer:
DENIUS [597]4 years ago
6 0

Answer:

-5 m/s²

Explanation:

Acceleration = change in velocity / change in time

a = (v − v₀) / (t − t₀)

a = (-0.4 m/s − 0.6 m/s) / 0.2 s

a = -5 m/s²

The ball decelerates at a rate of -5 m/s².

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What is a linguist? in terms of forensic.
nadya68 [22]


It is either a person who studies Linguistics or


a person skilled in foreign languages

5 0
3 years ago
What is the average speed of a cheetah that runs 88 m in 5 seconds
vovangra [49]

So, the average speed of the Cheetah is 17.6 m/s.

<h3>Introduction</h3>

Hello ! I'm Deva from Brainly Indonesia. This time, I will help regarding the average speed. The average speed is obtained from finding the average of the speeds that occur or can be detected from the division between distance and travel time. The average speed can be formulated by :

\boxed{\sf{\bold{\overline{v} = \frac{s}{t}}}}

With the following condition :

  • \sf{\overline{v}} = average speed (m/s)
  • s = shift or distance objects from initial movement (m)
  • t = interval of the time (s)

<h3>Problem Solving</h3>

We know that :

  • s = shift = 88 m
  • t = interval of the time = 5 seconds

What was asked :

  • \sf{\overline{v}} = average speed = ... m/s

Step by step :

\sf{\overline{v} = \frac{s}{t}}

\sf{\overline{v} = \frac{88}{5}}

\boxed{\sf{\overline{v} = 17.6 \: m/s}}

So, the average speed of the Cheetah is 17.6 m/s.

5 0
3 years ago
A box is pulled to the right with a force of 65 N at an angle of 58 degrees to the horizontal. The surface is frictionless. The
Citrus2011 [14]
The free-body diagram is missing, but I assume the only forces acting on the box are the force F pushing the box, the weight of the object and the normal reaction of the surface.

Since the weight and the normal reaction acts in the vertical (y) direction, the only force acting on the box in the horizontal (x) direction is the horizontal component of the force F, which is given by
F_x = F \cos 58^{\circ} = (65 N)(\cos 58^{\circ} )=34.4 N
And so this is the net force in the x-direction.
5 0
4 years ago
Read 2 more answers
Any change in an objects speed and /or direction ?
Alexeev081 [22]

Answer:

The answer to this question is acceleration or as scientist say velocity.

Explanation: We know that when you drive a car the acceleration is effected by the amount of speed you add when you press the gas,so you are accelerating the car faster.

8 0
3 years ago
A car came to a stop from a speed of 16m/s in a time of 2.3 seconds. What was the acceleration of the car?
dexar [7]
A=dv/dt. So
a=(0-16)/2.3 = -6.96m/s^2
3 0
3 years ago
Read 2 more answers
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