The answer is 1575, I just took the Review.<span />
Answer:
It will take you 30.8 s to travel the 120 m of the ramp.
Explanation:
Hi there!
The equation for the position of an object moving in a straight line is:
x = x0 + v * t
Where:
x = position at time t
x0 = initial position
v = velocity
t = time
In this case, we will consider the start of the ramp as the origin of our reference system so that x0 = 0.
Now, let´s calculate the speed of the person walking on the ground:
x = v * t
120 m = v * 72 s
v = 120 m / 72 s
v = 1.7 m/s
If you walk on the ramp with that speed, your total speed will be your walking speed plus the speed of the ramp because both are in the same direction. Then, using the equation for the position:
x = v * t
In this case, v = speed of the ramp + walking speed
v = 2.2 m/s + 1.7 m/s = 3.9 m/s
120 m = 3.9 m/s * t
t = 120 m / 3.9 m/s = 30.8 s
It will take you 30.8 s to travel the 120 m
There is the force of gravity on you and the ball by the Earth. The other half of the pair would be you and the ball applying the force of gravity on the Earth.
When you dribble the ball the floor applies a normal force on the ball to keep it from going through the floor. The ball applies a normal force back on the floor. There is also a normal force on you when you walk.
There is an applied force by your hand on the ball when you hit the ball down. The ball also applies the same force on your hand in the opposite direction.
Eyes shut = 0.5 sec
Speed = 90 km/hr
In 1 hour, it will travel at 90 km.
Let us divide 90 to 60 since 1 hour has 60 minutes.
The distance would be 1.5km/min.
Let us again divide it by 60 because 1 minute is equals to
60 seconds, so it will be 0.025km/second.
0.025 divided by 2 equals 0.0125km.
So the car’s distance is 0.0125km or 12.5 meters per 0.5
second.
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