Starting from rest, a 4.0-kg body reaches a speed of 8.0 m/s in 2.0 s.
What is the net force acting on the body?
F=ma
F=4xa
a= 8.0m/s / 2.0 s = 4.0 m/ss
F=4kg x 4 m/ss = 16 kgm/ss
kgm/ss = N (newtons)
F=16 N
Why did the body cross the road? To meet the net force on the other side! The net force acting on the body can be determined using Newton's second law of motion, which states that the net force (F_net) acting on an object is equal to the mass (m) of the object multiplied by its acceleration (a). Here, the mass of the body is 4.0 kg and the time it takes for it to reach a speed of 8.0 m/s is 2.0 seconds. To find the acceleration, we can use the equation a = Δv/Δt, where Δv is the change in velocity and Δt is the change in time. Plugging in the values, we get a = (8.0 m/s - 0 m/s) / 2.0 s = 4.0 m/s². Now we can calculate the net force: F_net = m * a = 4.0 kg * 4.0 m/s² = 16 N. So, the net force acting on the body is 16 Newtons.
To find the net force acting on the body, we can use Newton's second law of motion, which states that the net force acting on an object is equal to the product of its mass and acceleration.
Given:
Mass (m) = 4.0 kg
Initial velocity (u) = 0 m/s
Final velocity (v) = 8.0 m/s
Time (t) = 2.0 s
First, we can calculate the acceleration (a) using the equation:
a = (v - u) / t
Substituting the given values, we get:
a = (8.0 m/s - 0 m/s) / 2.0 s
a = 4.0 m/s^2
Now, we can find the net force (F) using Newton's second law of motion:
F = m * a
Substituting the given values, we have:
F = 4.0 kg * 4.0 m/s^2
F = 16.0 Newtons
Therefore, the net force acting on the body is 16.0 Newtons.
To find the net force acting on the body, we can use Newton's second law of motion. This law states that the net force acting on an object is equal to its mass multiplied by its acceleration. In this case, we are given the mass of the body as 4.0 kg and the time it takes to reach a certain speed as 2.0 s.
First, we need to find the acceleration of the body. We can use the formula:
acceleration = (final velocity - initial velocity) / time
Given that the initial velocity is 0 m/s and the final velocity is 8.0 m/s, the acceleration can be calculated as:
acceleration = (8.0 m/s - 0 m/s) / 2.0 s = 4.0 m/s^2
Now, we can calculate the net force acting on the body using the formula:
net force = mass x acceleration
net force = 4.0 kg x 4.0 m/s^2 = 16.0 N
Therefore, the net force acting on the body is 16.0 N.