To find velocity, we used the equation x=vo^2sin2(angle)/g. We plugged in the estimated angle, which is 40, and 9.8 m/s for gravity. We then plugged in 13m for x, since that is the distance we reached. We then multiple 40 by 2 and did sin(80). After that, we multiple 9.8 on both sides and then divided 1.4 on both sides. We then square root the x value to get velocity, which is 9.553.
To find the gravitational potential energy, we used the equation Ug=mgy. The mass is 9.07kg, multiplied by 9.8 m/s for gravity and .22m for height. The energy was 19.5589 Joules.
To find the effiency, we used the equation 1/2mv^2 divided by Stored E. Plugging in all the variables, we ended up 21.16% efficiency.
To find the gravitational potential energy, we used the equation Ug=mgy. The mass is 9.07kg, multiplied by 9.8 m/s for gravity and .22m for height. The energy was 19.5589 Joules.
To find the effiency, we used the equation 1/2mv^2 divided by Stored E. Plugging in all the variables, we ended up 21.16% efficiency.