Answer:0.14 kg
Explanation:
Gravitational potential energy=pe=116.62J
Height=h=85m
Acceleration due to gravity=g=9.8m/s^2
Mass=m
Pe=m x g x h
116.62=m x 9.8 x 85
116.62=m x 833
Divide both sides by 833
116.62 ➗ 833=(m x 833) ➗ 833
0.14=m
Mass=0.14 kg
Answer:
a. -2.07 m/sc^2
b. 9.204
c. 4.25 seconds
Explanation:
a. The computation of puck's acceleration is shown below:-
38.44 - 225 = 90a
= -2.07 m/sc^2
b. The computation of velocity is shown below:-
= 15 - (2.07) × 2.80
= 9.204
c. The computation of long which take to travel is shown below:-
= (v - u) ÷ a
= (6.2 - 15) ÷ (-2.07)
= 4.25 seconds
We simply applied the above formulas so that the correct answers could be come
Clarify what you mean by ratios?
A)After 3,5s -->v=v0+gt=21+(-9,8•3,5)=21+(-34,3)=-13,3m/s;
b)The maximum height that the orange reaches is h max=v0^2/2g=22,5m;v^2=sqrt(2gh)=>h=v^2/2g=9,025m.The height of the orange is H=h max-h=13,475m.;
c)The orange is traveling down.