Energy transformation or conversion
Answer:
-39.2m/s
Explanation:
Given that :
t = 4secs
g = -9.8m/s^2
v = ?
u = 0m/s ( since it was at rest )
V = u +at............. 1
Where v is the final velocity
a = -g = -9.8m/s^2 since the ball was dropped from a height which will eventually make it move against gravity
t = 4secs
Substitute the values into 1
v = 0 - 9.8×4
v = -39.2m/s
Answer:
32.1176°
Explanation:
In the picture above, I hope that it's a correct answer.
Answer:
energia cinética
Explanation:
Passo um:
Dados fornecidos
Um bloco de peso igual a 10 N,
Constante de mola k = 50N / m
Passo dois:
A forma de energia formada é a energia cinética
Passo dois:
Da lei de Hooke, F = ke
e = F / k
e = 10/50
e = 0,2m
podemos resolver a energia cinética aplicando a fórmula
KE = 1 / 2ke ^ 2
KE = 0,5 * 50 * (0,2) ^ 2
KE = 0,5 * 50 * 0,04
KE = 1J
