Answer:
D. 5.7 m
Explanation:
The acceleration of the car is -8.7 m/s² and the car has an initial speed (u) of 10 m/s. The car said to come to rest, that means that the final velocity (v) of the car is 0 m/s.
To find the distance traveled by the car (s) before complete stop, this equation is being used:
v² = u² + 2as
The car traveled 5.7 m before coming to a complete stop
Answer: 2 s
Explanation: In order to solve this problem we have to use the formule of the final speed getting with a constant acceleration, it is given by;
Vfinal=Vo+a*t where Vo is zero.
so then t=Vfinal/a = (10 m/s)/5 m/s^2= 2 s
If an object is accelerating, the forces acting on it must be <em>unbalanced</em>.
Answer:
Mass of banana is Kg
Explanation:
Step 1: Determine the equation of speed of an object moving in an harmonic motion
Speed of moving in an harmonic motion is given by
Here, v represents the speed of the object in harmonic motion, k is the springs constant, m is the mass of the object, A is the amplitude, and x is the position.
In this question , because only at this position maximum speed occurs
So the simplified equation becomes -
OR
Substituting the given values in above equation we get -
Assume spring constant is N/m
Mass of banana is Kg
The answer is mass
So when the mass decreases the acceleration increases