Answer:
C
Explanation:
vectors are any quantities that have both magnitude and direction
therefore both inertia and weight are both vectors
Answer:
Explanation:
Please check the picture and consider straight lines
Answer:
187.38 m
Explanation:
Using the equation of motion
s = ut + 1/2gt²...................... Equation 1
Where s = distance of fall, u = initial velocity of the rock, t = time taken for the rock to fall from rest, g = acceleration due to gravity of venus.
Given: u = 0 m/s ( from rest), t = 6.5 s, g = 8.87 m/s².
substituting into equation 1
s = 0(6.5) + 1/2(8.87)(6.5)²
s = 0 + 374.7575/2
s = 187.38 m.
Hence the rock will fall 187.38 m
Answer:
16.87 m/s
Explanation:
To find the speed of the car at the top, when the normal force is equal the gravitational force, we just need to equate both forces:
is the centripetal acceleration in the loop:
So we have that:
So, using the gravity = 9.81 m/s^2 and the radius = 29 meters, we have:
The speed of the car is 16.87 m/s at the top.
Answer:
When the boy has first started the motion this is similar to what kangaroo moves.
Initially the boy was standing and only force of gravity due to his own mass was acting.
When the boy started leaping an acceleration happened that caused his motion. His leg were bent to push above ground to leap, this provided an acceleration to the center of mass of the boy. and equal and opposite force was acted on the boys feet's touching the ground.
So according to Newton's third law action force was acted on the ground by the boy feet, and the reaction force was the opposite force by the rock and this caused the boy to accelerate.