Answer: 0 m/s
Explanation: The attached figure shows the position-time graph of a ladybug. We need to find the average speed of the ladybug between t = 4 s to t = 7 s.
We know that, the slope of a position-time graph gives velocity of an object. It can be given by :
In this case, the position of a ladybug at t = 4 s and at t = 7 s is the same i.e. 2 m.
It means its velocity is equal to at this time or we can say that ladybug is at rest.
Answer:
C) 5ML^2
Explanation:
2 Spheres of mass M
Bug's mass 3M
Rod length 2L, radius L
Find Rotational Inertia I
I=Σmr^2
I=(3M+M+M)L^2
I=5ML^2
C)1/2, in electrical forces, If distance between the two objects was increased, then force decreases.
The mass of the box would be 30!
total time = ball travel time + sound travel time
2.40 = Tball + 18.0 m / (340 m/s)
Tball = 2.35 s
V = d/t = 18.0 / 2.35 = 7.67 m/s