The acceleration of the race car after 12.0 seconds is -3.33 m/s^2.
To find the acceleration of the race car after 12.0 seconds, we need to use the formula for acceleration: acceleration = change in velocity / time. The initial velocity of the race car is 144 km/h, and it comes to a halt, so the final velocity is 0 km/h. We need to convert these velocities to meters per second (m/s) before using the formula.
Given that 1 km/h = 0.2778 m/s, the initial velocity is 144 km/h x 0.2778 m/s = 40 m/s. Similarly, the final velocity is 0 km/h x 0.2778 m/s = 0 m/s.
Plugging these values into the formula, we get: acceleration = (0 m/s - 40 m/s) / 12.0 s = -3.33 m/s^2.
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The correct answer to the question is that water will exert a force on the swimmer in forward direction, and swimmer will move along that direction.
EXPLANATION:
Before going to answer this question, first we have to understand Newton's third laws of motion.
Newton's third laws of motion states that, for every action, there is an equal and opposite reaction.
In the given question, the swimmer pushes the water in backward direction. This is the force of action. As per Newton's third law, the water must exert a reaction on the swimmer. The water applies a force on the swimmer in forward direction for which the swimmer can swim in the water.
Answer: True
Explanation:
Class characteristics can be define as the features which are common to the group of objects. Like the make, model, label of the manufacturing company, design, shape and form. The individual characteristics can be define as the features which develop on the object or any other article with it's wear and use. Like tear, cuts, malformation and deposition of dust, dirt, and mud. The individual characteristic indicate towards the ownership of article or evidence to a particular person.
The class characteristics can only support the possibility of the evidence exactly alike that of the evidence found at the scene of crime. But the individual characteristics can directly link the evidence with the cause of crime. Hence, will be useful to prove that a crime has taken place in the court of law.
Answer:
It is TRUEEEE
Explanation:
I just took the test and got it right
C. normal
D. irregular
velocity with respect to the ground?
Answer:
190 km/h
Explanation:
randomly picked it
To find the plane's velocity with respect to the ground, we need to consider the combination of the plane's airspeed and the wind's speed and direction. The resulting velocity is 180 km/h north, 60 km/h west.
To find the plane's velocity with respect to the ground, we need to consider the combination of the plane's airspeed and the wind's speed and direction. Since the plane is heading due north and the wind is blowing from the west, we can use vector addition to find the resulting velocity.
First, we break down the airspeed into its north and east components. The north component is 180 km/h, and the east component is 0 km/h because the plane is not moving in that direction.
Next, we break down the wind's velocity into its north and east components. The north component is 0 km/h because the wind is blowing from the west, and the east component is -60 km/h because the wind is against the plane's motion.
Finally, we add the north components together and the east components together. The resulting velocity is 180 km/h north, 60 km/h west. This is the plane's velocity with respect to the ground.
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