physics
A body is projected vertically upwards with a speed of 40 m/s.Find the distance travelled by body in last second of upward journey?(g=9.8m/s2 neglect effect of air resistance)
asked by
mona

V = Vo + g*Tr = 0 at max. ht.
Tr = Vo/g = 40/9.8 = 4.08 s. = Rise
time.
T = 4.081 = 3.08 s.
h1 = Vo*t + 0.5g*t^2
h1 = 40*3.08  4.9*3.08^2 = 76.7 m.
h2 = 40*4.08  4.9*4.08^2 = 81.6 m.
h2h1 = 81.676.7 = 4.93 m. = Distance traveled in the last second.
posted by Henry
Respond to this Question
Similar Questions

Science
A body is projected vertically upward with a speed of 40 m/s. Find the distance travelled by the body in the last sec of the upward journey taking g = 9.8m/s 
physics
a body is thrown vertically upward return to the earth in 3sec. (a)what was the initial velocity of the body (b)what height did the body reach? neglect the resistance of air. 
physics
a body thrown vertically upward returns to the earth in 3sec what was the initial velocity of the body? what height did the body reach? neglect the resistance of air. The answer after solving is 14.7m/s and 11m. please tell me how 
physics
A stone of mass 0.7kg is projected vertically upward with a speed of 5m/s.calculate the maximum height reached. [Take g=10m/s^2 and neglect air resistance]. " 
physics
Please help me to solve this problem. A body is projected vertically upwards with a velocity 20m/s. find the maximum height reached by the body.(g=10m/sec2) 
10 th physics
Please help me to solve this problem. A body is projected vertically upwards with a velocity 20m/s. find the maximum height reached by the body.(g=10m/sec2) 
physics
A body is projected vertically upwards at a speed of 63m/s. if g = 9.8m/ s². Find the maximum height reached? 
physics
a body is projected with velocity v1 from a point a at the same time another body is projected vertically upwards with velocity v2 the point b lies vertically below the height the point for both the bodies to collide 2/v should be 
sciences
how high will a body rise that is projected vertically upward with a speed of 100 ft/s how long will it will take a body to reach its maximum height? 
science
Please help me to solve this problem. A body is projected vertically upwards with a velocity 20m/s. find the maximum height reached by the body.(g=10m/sec2)