If the acceleration of an object is zero then its speed must be...zero?

Q: At t = 8s the instantaneous acceleration of the ball will be and the ball will have a displacement…

A: We know the slope of the velocity-time curve at any time t is equal to the instantaneous…

Q: The maximum speed of a train is 90 km/h. It takes 10 hours to cover a distance of 500 km. Find the…

A: Given Data, Maximum speed of the train (vmax)= 90 km/h Total Distance traveled (d)= 500 km Total…

Q: A car travels 120 m in 5.0 s at constant velocity. If it then breakes and comes to a stop in 4.0 s…

A: Given data The distance traveled by car is: d = 120 m The time for which car travels at the constant…

Q: how tall is the building?

A: Given data: The final velocity attained by the water balloon is: v = 40.5 m/s The height of the…

Q: How is this problem formatted?

A: The given situation is an example for projectile motion launched from a height with zero launching…

Q: Can a body possess acceleration without velocity?

A: Acceleration is the rate of change of velocity. The projection of a body into a height in the…

Q: Does the speedometer in a car measure velocity, speed, or both?

A: Speed of an object is defined as the distance travelled by an object per unit time. It is a scalar…

Q: A ball is thrown horizontally from the roof of a build- ing 7.5 m tall and lands 9.5 m from the…

A:

Q: Show that acceleration at any instant does not depend upon velocity at any instant?

A:

Q: In how many minutes after 2 o’clock will the hands of the clock extend in opposite direction for…

A: Analog clock has minimum of two hands to show time, one is an hours hand and the other is a minutes…

Q: A bullet 2.50 cm long is fired at 450 m/s and

A:

Q: Can the instantaneous speed of an object ever be greater than its average speed?

A: Yes, the instantaneous speed of an object can be greater than its average speed.

Q: A boat is rowed at 8 km/h directly across a river thats flows at 3 km/h. What is the resultant speed…

A:

Q: And object has an initial velocity of 15 m/s. How long must it accelerate at a constant rate of 3…

A: Write down the equation of motion

Q: If a ball if dropped from a 30m tall building, what will its velocity be when it reaches the ground?…

A: Initial velocity of the ball (u)=0 Let final velocity of the ball when it reaches the ground is=v…

Q: A ball is tossed at an angle. It moves in an arc, reaches its highest point, and then falls in an…

A:

Q: A ball is thrown straight up at 17 m/s.and g = 10 m/s. Find its distance after 2.7 seconds?

A: To find the distance s we use kinematic equations.

Q: If a car moves with a constant velocity, does it also move with a constant speed?

A: Yes, if a car moves with a constant velocity it also move with constant speed.

Q: A boat propelled to move at 25mi/hr in still water, travels 4.2 miles against the river current in…

A: First, we convert all the data into cohesive units. Here we convert all the distances to miles from…

Q: If s=t^3-5t^2+5t-3, when will the velocity be equal 2?

A: s = t3 - 5t2 + 5t - 3

Q: would

A: The kinematics equation can be used to find the unknown parameters such as final velocity, distance…

Q: If you throw an object upwards What’s the direction of its velocity and of its acceleration while it…

A: When the object goes up, the velocity will be directed in the upward direction. When the object goes…

Q: If an apple freely falls (no airdrag) from the branch of a tree and hit the ground in exactly 0.5…

A:

Q: While sitting on a tree branch 10.0 m above the ground, you drop a chestnut. When the chestnut has…

A: The first chestnut is dropped with zero initial velocity, so the velocity it acquires, when it has…

Q: If the particle maintains the same acceleration, the distance it will cover after 100 seconds is?

A:

Q: A projectile is launched straight up in the air. Its height​ (in feet) t seconds after launch is…

A:

Q: If the particle maintains the same speed, the distance it will cover after 100 seconds is?

A: Required : If the velocity is constant. The distance covered in 100 s.

Q: The brakes of an automobile are suddenly applied at the instant when its velocity is 20 m/s. If the…

A:

Q: A motor boat travels 10 km/hr in still water. If the same boat travels in a river flowing at a rate…

A: The relative velocity of the boat going upstream = (Speed of boat in still water) - (Speed of river)

Q: in how many minutes after 6 o'clock will the hands of the clock extend in opposite directions for…

A: Clock related problem:-

Q: If the particle maintains the same acceleration, its speed after 100 seconds is?

A:

Q: If a four engine jet accelerates down the runway at 5 m/s squared and three of the jet engines fail,…

A: As four engines produce an acceleration of a=5 m/s2 , the acceleration produced by one of the engine…

Q: Can an object be accelerated without speeding up or slowing down?

A: Acceleration of an object is the rate of change of its velocity. An object will have acceleration if…

Q: A car accelerates uniformly from rest to a speed of 12.0 m/s in 4.00 s. a. Find the car's…

A: Given data, The speed of the car is, v=12 m/s The time taken is, t=4 s Applying the equation for…

Q: A chunk of ice breaks off a glacier and falls 30.0 meters before it hits the water. Assuming it…

A: It is given that,

Q: .If a ball is rolled across level ground with an initial speed of 20 ft/s, and if the speed of the…

A: Given: initial speed, u = 20 ft/s  finalspeed, v = 0  a = - 6 ft/s2

Q: Calculate the acceleration of a ball that starts from rest and rolls down a ramp and reaches a speed…

A: Given: The initial speed of the ball is 0 m/s. The final speed of the bullet is 16.8 m/s. The time…

Q: A police jeep is following a car with a speed of 120m/s fires an object with speed of 80m/s. If car…

A:

Q: when velocity is zero for a time, what is true about directed distance

A: If the velocity is zero for a time, this indicates that the directed distance is not changing.…

Q: What is the acceleration of the particle?

A: Last option is correct   1 km/s2 along z Note that  i , j and k are unit vectors along x , y and z…

Q: Does the speedometer of a car measure speed or velocity?

A: Speed can be defined as the rate at which a body covers a distance. It is a scalar quantity.

Q: Grant jumps 1.90 m straight up into the air to slam-dunk a basketball into the net. With what speed…

A: The height traveled by a ball is, h=1.9 m The final speed of the ball in the net is, v=0 m/s

Displacement, Velocity and Acceleration

In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.

Linear Displacement

The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.