Answer:
Gravity
Explanation:
Pretty self-explanatory
We are kept on earth because of gravity and it keeps planets orbiting around the sun.
Answer:
ideal speed(v)≅17m/s
Explanation:
Given: Radius, r = 110 m
Angle(α) = 15°
g=9.81m/
Find; (a) The ideal speed, v.
tanα=
make V subject of the formula;
v=
v=
v=
v≅17m/s
<h2>This vertical component of velocity is 35 m/s </h2>
Explanation:
The dart is project with 150 m/s from a point at an angle of 30⁰
The vertical component of velocity = 150 sin 30 = 75 m/s
Thus initial vertical velocity is = 75 m/s
The velocity after 4 s can be calculate by
v = u - g t
here u is the initial velocity and t is the time , g is the acceleration due to gravity .
Thus v = 75 - 10 x 4 = 35 m/s
Answer:
B my brother say that it was
Magnitude of displacement = 
Adding the squares gives displacement = 
Displacement =
≈ 724.7m