Answer:
C) 4 seconds
Explanation:
The height of an object is given by the following formula:
To find the flight time you equal the height s to zero:
Then, you have a quadratic equation of the form:
you use the quadratic formula in order to find the roots of the polynomial:
you take the positive value of t because this has physical meaning.
Hence:
the time is C) 4 seconds
Explanation:
It is given that,
Mass of the bullet, m₁ = 0.093 kg
Initial speed of bullet, u₁ = 100 m/s
Mass of block, m₂ = 2.5 kg
Initial speed of block, u₂ = 0
We need to find the speed of the block after the bullet embeds itself in the block. Let it is given by V. On applying the conservation of linear momentum as :
V = 3.58 m/s
So, the speed of the bullet is 3.58 m/s. Hence, this is the required solution.
Answer:
Explanation:
height of slope(h) =90 foot
weight of snowboarder=170 pounds\approx 77.1107 kg
as the snowboarder is sliding down the slope therefore
Now net acceleration of snowboarder is
That would be false hope this helps