Answer:
finish at the same time
Explanation:
Force equals mass times acceleration. Without friction the net force on both will be equal to component of the force of gravity. Therefore the net force will be mass time acceleration due to gravity times the incline of the hill. Since net force equals mass times acceleration. Now we set net force equals mass times acceleration and the mass will cancel out giving both block the same acceleration and therefore they will finish at the same time
Answer:
34.62m/s^2
Explanation:
Force = mass x acceleration
Given
Force = 1800N
Mass = 52kg
Therefore
1800 = 52 x a
Divide both sides by 52
1800/52 = 52/52 x a
34.62 = a
a = 34.62m/s^2
Answer:
1.199km/h towards west
2.17km/h towards upstream direction
3.702km/h towards east
4.2km/h towards downstream direction
5.a.149km/h towards east
b.1043km
Explanation:
1.V p,e = Vp,w + Vw,e
= 211km/h-12km/h
=199km/h towards west
2. Vb,o=Vb,r+Vr,o
Vb,o=22-5km/h
=17km/h towards upstream direction
3.Vj,w= Vj,e + Ve,w
Vj,w = 740-38km/h
= 702km/h towards east
4.Vk,r= Vk,e+ Ve,r
Vk,r=33 - 31km/h
=2km/h towards downstream direction
5.a.Vp,e=Vp,w +Vw,e
Vp,e=216-67km/h
=149km/h towards east
b. distance =speed * time
= 149km/h * 7h
=1043km
[V p,e-velocity of plane relative to earth(ground)]
[p-plane ,w-wind ,e-earth, b-boat, r-river, o-object, j-jet, k-kayaker,]
Answer:
an open system
Explanation:
which is contrasted with the concept of an isolated system which exchanges neither energy, matter, nor information with its environment.