#1
Since Beth rode the Flying saucer ride which is spinning on its axis while axis is moving to and fro as well, so here Beth will experience two motions in this case
(i) Spinning motion
(ii) Rotational motion
#2
Jill and Scott both traveled for 30 min
So time of motion for both is 0.5 h as we know that 1 h = 60 min
Now from the formula of speed we know that
Speed of Jill
speed of Scott
so correct answer is
B) Scott had the faster speed since he rode at 20 k/h while Jill only traveled 10 km/h.
#3
Since we know that <em>acceleration is rate of change in velocity</em>
So here we can say that every motion where velocity changes with time then it is an accelerated motion.
Now change in velocity occurs when either the magnitude will change or its direction will change because here velocity is a vector quantity and it will change with magnitude and direction both.
so here due to oval path the direction of velocity will changes at many points and hence it will be an accelerated motion.
so correct answer is
<em>C) James was right since the car changed direction during the race.</em>
Answer:
The correct answer will be-
1. Allows scientists to replicate experiments
2. Tests only one variable at a time
3. Plans how to record data so they can be published
Explanation:
A scientific experiment is performed to test the hypothesis which represents the limited explanation of the phenomenon.
The experiment is designed in a way that it test one variable at a time like the growth of plants. The experiment must be designed in a way that it can be replicated to reduce the error and repeated by other scientific persons to support the experiment. The design includes the plan for recording the results as it is one of the steps of the scientific method.
Thus, the selected options are the correct answer.
Controlled experiment is the type of experiment that involves changing only one variable at a time. Controlled experiment is subtly defined as an experiment which holds everything constant except one particular variable. This type of experiment allows only one variable to ever change at a given time
Thermal energy measures the total kinetic energy of the particles in a substance. The greater the motion of particles, the higher a substance's temperature and thermal energy. A substance's total thermal energy depends on its temperature, number of atoms, and physical state.
