Answer:
640 J
640 J
Explanation:
ΔKE = ½ mv² − ½ mu²
ΔKE = ½ m (v² − u²)
ΔKE = ½ (80 kg) ((5 m/s)² − (3 m/s)²)
ΔKE = 640 J
Work = ΔE
Work = 640 J
A line that is falling towards the x axis represents an object that is negatively accelerating, or slowing down. When the line hits the x axis, the object has stopped moving. If the graph continues below the x axis, the object has changed direction and is moving backwards at increasing velocity.
B - antidepressant (anti meaning against)
Answer:
1.984 m/s^2
Explanation:
initial velocity of air craft, u = 0 m/s
final speed of the aircraft, v = 120 km/h
Convert the speed into m/s from km/h
So, v = 120 km/h = 33.33 m/s
distance, s = 280 m
Let a be the acceleration of the aircraft.
Use third equation of motion


a = 1.984 m/s^2
Thus, the acceleration of the aircraft is 1.984 m/s^2.