A 60m long train moving on a straight level track passes a pole in 5 seconds. find the
speed of the train and the time it will take to cross a
540m long bridge.​

Explanation:

part 1.

s=60m

t=5s

v=s/t. =60/5 =12m/s

part 2

total s= 540+60. =600m

v=12m/s

t=s/v. =600/12 =50s

GIVEN:

Length of the train = 60m.

Time it takes to pass from a pole is = 5s.

ANSWER:

Now, from this the velocity of the train can be known easily.

Speed = distance/time

Now with this speed, to cover a distance of 540km, the train will take time time

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft