A net force acting on an object causes the object to accelerate.
That much is totally true.
The direction of the acceleration is the direction of the net force.
vf^2 = 2ad
vf^2 = 2(9.81)(44m)
vf^2 = 863.28
vf = √863.28
vf = 29.4 - using equations of motion
ME = PE + KE
ME = mgh + 1/2mv^2
ME = (1)(9.81)(44) + 1/2(1)(3^2)
ME = 431.64 + 4.5
ME = 436.14 - using conservation of energy
hope this helps :)
Answer:
2.9
Explanation:
9.7 / 3.33 = 2.912912912...
We need to round to the correct number of significant figures. 9.7 has two significant figures, and 3.33 has three significant figures. We need to round to the least number of significant figures available, so we round to two.
2.91 ≈ 2.9
Answer:
38.8 km/hr
Explanation:
The total distance is 2 × 282 km = 564 km.
The total time is 6 hr 32 min + 8 hr = 14 hr 32 min = 14.533 hr.
The average speed is:
(564 km) / (14.533 hr)
38.8 km/hr