Answer:
t = 4 s
Explanation:
As we know that the particle A starts from Rest with constant acceleration
So the distance moved by the particle in given time "t"



Now we know that B moves with constant speed so in the same time B will move to another distance

now we know that B is already 349 cm down the track
so if A and B will meet after time "t"
then in that case


on solving above kinematics equation we have

Answer
A thin atmosphere does not supply much oxygen, and the heat from the sun would evaporate it, because mercury is close to the sun.
For the answer to the question above, each horse's force forms a right angle triangle with the barge and subtends an angle of 60/2 = 30°. The resultant in the direction of the barge's motion is:
Fx = Fcos(∅)
We can multiply this by 2 to find the resultant of both horses.
Fx = 2Fcos(∅)
Fx = 2 x 720cos(30)
Fx = 1247 N
The answer is c to take a pictures with the camera in the metal hall
Answer:
The coconut hit the ground after 1.28 s
Explanation:
Velocity: This can be defined as the rate of change of displacement. Or it is defined as speed in a specified direction. Velocity is a vector quantity. The S.I unit of velocity is m/s.
Using the equation of motion,
S = ut + 1/2gt²....................................... Equation 1
Where S = distance, u = initial velocity, t = time, g = acceleration due to gravity
<em>Given: s= 8 m, u = 0 m/s ( because it was drop from a height), </em>
<em>Constant : g = +9.8 m/s²</em>
<em>Substituting these values into equation 1,</em>
<em>8 = 0×t + 1/2(9.8×t²)</em>
<em>8 = 4.9t²</em>
<em>t² = 8/4.9</em>
<em>t = √1.63</em>
<em>t = 1.276 s</em>
t = 1.28 s
Therefore the coconut hit the ground after 1.28 s