The force of an object (f) is equal to its mass (m) times its acceleration (a). Thus, the formula for calculating force is f = m
2 answers:
Answer:
D. .
Step-by-step explanation:
We are given that force of an object and we have to find the equation would be used to calculate the acceleration
Mass of object=m
Acceleration of an object= a
Force of an object=f
We are given that force of an object is equal to its mass times its acceleration.
Therefore , the formula for calculating force
f=ma
Because we are given this formula
Now , we have find the equation which is used to calculate acceleration
Then by division property of equality we have
Hence, the equation would be used to calculate acceleration .Therefore, option D is true.
You might be interested in
a)
b) See interpretation below
Step-by-step explanation:
a)
The motion of both balls is a free-fall motion: it means that the ball is acted upon the force of gravity only.
Therefore, this means that the motion of the ball is a uniformly accelerated motion, with constant acceleration equal to the acceleration of gravity:
in the downward direction.
For the ball dropped from the initial height of , the height at time t is given by
(1)
The ball which is thrown upward from the ground instead is fired with an initial vertical velocity , and its starting height is zero, so its position at time t is given by
(2)
Therefore, the polynomial that represents the distance between the two balls is:
b)
Now we interpret this polynomial, which is:
which represents the distance between the two balls at time t.
The interpretation of the two terms is the following:
- The constant term, , is the initial distance between the two balls, at time t=0 (in fact, the first ball is still at the top of the building, while the second ball is on the ground). For this problem,
- The coefficient of the linear term, , is the initial velocity of the second ball; this terms tells us that the distance between the two balls decreases every second by
feet.