Answer:
4.88 m/s
Explanation:
Utilizing the law of conservation of energy, kinetic energy at the inclined bottom equals to the potential energy at the top hence
and making v the subject of the formula then 
where m represnt the mass of sled, v is the initial speed, g is acceleration due to gravity and h ia the vertical height. Substituting g with 9.81 m/s2 and h with 1.22 then
You know that the formula for finding horizontal displacement is;
s=uₓt
s=(5 m/s)(3s)
s=15 m
Therefore, the ball travelled 15 m.
Hope I helped :)
Answer: The mass would be 1000m3 and the volume would be 1000kg
Explanation:
