Table of Contents
- 1 Why is there always acceleration when an object travels in a circular path at a constant velocity?
- 2 When an object travels a distance in a certain time period it is called?
- 3 Why does the object stay in motion without accelerating into the center?
- 4 When can the equations of kinematics not be used?
- 5 When calculating the distance an object moves in a certain period of time what two factors must you know?
- 6 What is the distance Travelled by a body in a particular direction?
- 7 How is the distance traveled related to displacement?
- 8 How are linear speed and tangential speed related to circular motion?
Why is there always acceleration when an object travels in a circular path at a constant velocity?
The velocity vector is constant in magnitude but changing in direction. For this reason, it can be safely concluded that an object moving in a circle at constant speed is indeed accelerating. It is accelerating because the direction of the velocity vector is changing.
In which of the following situations can the equations of kinematics not be used?
Kinematics: The motion of a body or heavenly bodies in space are determined by the concept of kinematics. Kinematics is depends upon geometry or pictures,in mechanics kinematics role is very significant and kinematic equation can not be used when the acceleration vary from moment to moment.
When an object travels a distance in a certain time period it is called?
Speed. If you know the distance an object travels in a certain amount of time, you can calculate the speed of the object. The speed of an object is the distance the object travels in one unit of time.
Is the distance Travelled by a body in a particular distance in unit time?
The distance travelled by an object in unit time is known as its speed.
Why does the object stay in motion without accelerating into the center?
It is the inertia of your body – the tendency to resist acceleration – that causes it to continue in its forward motion. While the car is accelerating inward, you continue in a straight line.
Why is the motion in a circle with constant speed called accelerated motion?
Uniform circular motion is accelerated because the velocity changes due to continuous change in the direction of motion. So, even when the body moves at a constant speed, its velocity is not constant. Therefore, circular motion is an acceleration motion even when the speed remains constant.
When can the equations of kinematics not be used?
The equations can be utilized for any motion that can be described as being either a constant velocity motion (an acceleration of 0 m/s/s) or a constant acceleration motion. They can never be used over any time period during which the acceleration is changing.
When a particle is moving along a straight line?
A particle is moving along a straight line with constant acceleration. At the end of tenth second its velocity becomes 20 m/s and in tenth second it travels a distance of 10 m. Then the acceleration of the particle will be : (1) 10 m/s2 (2) 20 m/s2 m/s2 (4) 3.8 m/s2 H-8/39.
When calculating the distance an object moves in a certain period of time what two factors must you know?
Terms in this set (28) If you know the distance an object travels in a certain amount of time, you know the speed of the object. To be more exact the SPEED of an object is the distance the object travels per unit of time. What is speed? Speed is a type of rate.
What is the distance an object travels in a certain period of time without regard to direction?
Speed. The distance an object travels in a certain period of time without regard to direction. Speed =distance/time. Instantaneous speed.
What is the distance Travelled by a body in a particular direction?
Distance travelled by an object in a specific direction is called Velocity. Velocity is a vector quantity.
What is the distance Travelled in one direction called?
Distance travelled in one direction by an object in unit time is called its Speed.
The total distance traveled is the sum of the magnitudes of the individual displacements, 8 m + 3 m = 11 m. The net displacement (the vector sum of the individual displacements), however, is still 5 meters to the left: .
How do you calculate the total distance traveled?
If you integrate the absolute value of velocity (which is speed), then you get the total distance traveled. If you integrate just velocity, you get total displacement (how far apart the starting and ending positions are from each other) rather than the total distance the particle moves between the starting and ending times.
Linear speed and tangential speed gives the same meaning for circular motion. It can be defined as distance taken in a given time. If the object has one complete revolution then distance traveled becomes; 2πr which is the circumference of the circle object. VA=2πr/time
Can you solve for distance with only V and D?
This gives you the distance traveled during a certain amount of time. If you know any 3 of those things, you can plug them in to solve for the 4th. So if you only know v and d, you can’t solve for a unless you also know what t is (i.e. what time was d measured at).