Answer:
8400 J
Explanation:
That is the picture of the explanation
Kinetic energy equation is given:
Substituting our known variables, we get:
KE = 51484.375J
Hope this helps!
GiveN:
- Initial velocity = 9.8 m/s²
- Accleration due to gravity = -9.8 m/s²
- Time taken = 1 s
To FinD:
- Final velocity of the ball?
Step-by-step Explanation:
Using the first Equation of motion,
⇒ v = u + gt
⇒ v = 9.8 + -9.8(1)
⇒ v = 0 m/s
The final velocity is hence <u>0</u><u> </u><u>m</u><u>/</u><u>s</u><u>.</u>
<h3>
Note:</h3>
- While solving questions of under gravity motions using equations of motion, remember the sign convection to avoid mistakes.
- You can consider positive above the ground and negative for towards it.
I believe the answer would be, refractor type telescopes because these are best used for planetary observations.
Answer:
1.9311 m/s
168.86792 N
Explanation:
v = Final velocity
m = Mass of truck =
s = Displacement = 26.5 m
Work done is given by
The speed is 1.9311 m/s
Work done is given by
The horizontal force is 168.86792 N