Based on the Nebular theory, which of these best describes how the center of a new planetary system is formed?
2 answers:
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Complete question
A 2700 kg car accelerates from rest under the action of two forces. one is a forward force of 1157 newtons provided by traction between the wheels and the road. the other is a 902 newton resistive force due to various frictional forces. how far must the car travel for its speed to reach 3.6 meters per second? answer in units of meters.
Answer:
The car must travel 68.94 meters.
Explanation:
First, we are going to find the acceleration of the car using Newton's second Law:
(1)
with m the mass , a the acceleration and the net force forces that is:
(2)
with F the force provided by traction and f the resistive force:
(2) on (1):
solving for a:
Now let's use the Galileo’s kinematic equation
(3)
With Vo te initial velocity that's zero because it started from rest, Vf the final velocity (3.6) and the time took to achieve that velocity, solving (3) for
:
Answer:
It will take 2.45 seconds.
Explanation:
A football field measured 120 yards, that is arround 0.068 miles, the car is moving with a constant speed so the formula we have to apply for this is:
in order to obtain the time in seconds:
Answer:
The force is
The time is
Explanation:
From the question we are told that
The mass of the car is
The initial velocity of the car is
The final velocity of the car is
The acceleration is
Generally the acceleration is mathematically represented as
=>
=>
converting to seconds
=>
Generally the force is mathematically represented as
=>
=>
Now converting to foot-pound-second we have
=>