Projectile motion is when the direction of an object follows the shape of an arc. The only force acting on the object is gravity. Also, the concept is that the motion of the horizontal and vertical directions are independent. Therefore, assuming no air resistance, the time for a rock thrown over the cliff at some angle to reach the ground will be the same time if you just simply free-fall the rock.
Hence, we can solve this using rectilinear motion equations.
y = vt + 1/2*a*t^2, where
y is the vertical distance
v is the initial velocity
a is the acceleration due to gravity equal to -32.2 ft/s^2
t is the time of flight
However, it would be impossible to have 0 height. I think there is some typographical error right there. Let's just assume a height of 1000 ft. Substituting the values,
100 = 160*t + 1/2*-32.2*t^2
t = 9.3 seconds
Answer: 0.3 meters.
Step-by-step explanation:
First we need to turn one of those into a fraction or decimal to make things easier for us. Lets turn into a decimal.
1 1/5 as a decimal is 1.2.
Now we compare the two
Now we need to subtract 1.5 by 1.2 to see how much more he jumps by.
Steve jumps more by 0.3 meters.
<h3>
Answer: 50</h3>
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Explanation:
We simply multiply the two values given to us
600*(1/12) = 600/12 = 50
We expect about 50 bulbs to be defective.
Note how if we had 50 bad bulbs, then 50/600 = (1*50)/(12*50) = 1/12 of the batch of 600 bulbs is defective.
I’m pretty sure it’s 70 m i think