Y=4x-19
Perpendicular because it has an opposite reciprocal slope
While travelling along a highway a drivers velocity is 9 m/s. In 12 seconds, the car has gone for 108 m.
<u>Explanation:</u>
The car travelling along the highway has a uniform velocity of 9 m/s. therefore to calculate the distance travelled by the car with the uniform velocity in 12 seconds, simple formula of velocity is to be employed.
Thereby, as we know that
The displacement is along the highway with uniform motion, therefore, distance=displacement
Given that,
Velocity = 9 m/s
Time = 12 s
Putting the values in the formula, we get,
Therefore, the car travels for 108 m in the 12 seconds while travelling along highway with 9 m/s of velocity.
The only force opposing the block's sliding as it slows down is friction with magnitude <em>f </em>. By Newton's second law, the net force in this direction is
∑ <em>F</em> = -<em>f</em> = <em>ma</em> = (4.00 kg) <em>a</em>
Assuming constant acceleration <em>a </em>, the acceleration applied by friction is such that
(1.5 m/s)² - (11 m/s)² = 2<em>a</em> (4.00 m)
Solve for the acceleration :
<em>a</em> = ((1.5 m/s)² - (11 m/s)²) / (8.00 m) ≈ -14.8 m/s²
Then the frictional force exerted a magnitude of
-<em>f</em> = (4.00 kg) (-14.8 m/s²)
<em>f</em> ≈ 59.4 N
and was directed opposite the block's motion.
The tennis ball that is hit the hardest would have the most kinetic energy.