Answer:
The initial velocity is 38.46 m/s.
Explanation:
The horizontal distance travel by the tennis ball = 13 m
The height at which the tennis ball dropped = 56 cm
Now calculate the initial speed of tennis ball.
The vertical velocity is zero.
Below is the calculation. Here, first convert centimetre into kilometre. So, height at which ball dropped is 0.56 km.




Answer:
Current- the flow of free charges, such as electrons and ions
Drift velocity- the average speed at which these charges move
b is the answer there you go if you need the answer
<span>B. because they cannot make light rays converge</span>
Answer:
Final speed, v = 12.57 m/s
Explanation:
Given that,
Slope with respect to horizontal, 
Distance travelled, d = 19 m
Initial speed of the cyclist, u = 9.5 m/s
We need to find the final speed of the cyclist. Let h is the height of the sloping surface such that,

h = 3.46 m
Let v is the final speed of the cyclist. It can be calculated using work energy theorem as :



v = 12.57 m/s
So, the final speed of the 12.57 m/s. Hence, this is the required solution.