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3 years ago

"Suppose an elephant (Tiny) was

1 answer:

7 0

Answer :

Distance traveled by Tiny : 8m + 6m + 2m = 16 meters
Displacement of Tiny : 8m (left) - 6m (right) + 2m (left) = 4 meters to the left

Explanation :

Distance : sum of all values of movement given in the question = 8 meters (left) + 6 meters (right) + 2 meters (left)

Displacement : Shortest distance covered from the starting point = 8 meters (left) + 2 meters (left) - 6 meters

Sry I could not explain more hope you found it useful

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Q1: A cyclist brakes to a stop. His thinking distance was 1m and his braking distance was 3m. What was his overall stopping dist

weeeeeb [17]

Answer:

1.) 4m

2.) 37 m

3.) 62m

4.) 2.5 s

Explanation:

1.) Given that the

Thinking distance = 1m

Breaking distance = 3m

Stopping distance = breaking distance + thinking distance

Stopping distance = 1 + 3 = 4m

2.) Given that the

Stopping distance = 52 m

Thinking distance = 15m

Breaking distance = 52 - 15 = 37m

3.) The stopping distance = 76m

Thinking distance = 14m

Breaking distance = 76 - 14 = 62m

It take the brakes 62m to slow the car down to a stop.

4.) Given that a lorry travels 28m when stopping from a speed of 4m/s. If its braking distance was 18m, what was the driver’s reaction time?

Thinking = stopping distance - braking distance

Thinking distance = 28 - 18 = 10m

Speed = distance/time

4 = 10/reaction time

Reaction time = 10/4

Reaction time = 2.5 s

5.) Question incomplete

5 0

3 years ago

2.5

Anit [1.1K]

Answer:

what is this I don't understand the question

5 0

3 years ago

4) T F If two objects have the same moment of inertia, they must have the same mass.

lisov135 [29]

Answer:

False

Explanation:

The moment of inertia for a rigid body is given by

$I=\int \rho(r) r^2 dV$

where

$\rho(V)$ is the density distribution of the object

r is the distance from the axis of rotation of the object

Essentially, the moment of inertia does not depend only on the mass of the object, but also on its shape. For example: for a solid cylinder, the moment of inertia derived from the formula above is

$I=\frac{1}{2}MR^2$

where M is the mass of the cylinder and R is its radius. As we see, I (moment of inertia) does not depend on the mass only: therefore, if two objects have same moment of inertia, this does not imply that they also have the same mass.

4 0

4 years ago

A ball is thrown vertically upward with an initial velocity of 23.6 meters per second. What is the maximum height reached by the

REY [17]

Answer:

Maximum height attained by the ball will be h = 28.416 m

Explanation:

We have given initial speed of the ball u = 23.6 m /sec

At maximum height velocity will be zero so final velocity v = 0 m/sec

Acceleration due to gravity $g=9.8m/sec^2$