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6. At some instant, the acceleration and velocity vectors for some object point in the same...
An object moves in a circular path at a constant speed. What is the relationship between the directions of the object's...
An object moves in a circular path at a constant speed. What is the relationship between the directions of the object's velocity and acceleration vectors? The velocity and acceleration vectors point in opposite directions. The velocity and acceleration vectors are perpendicular. The velocity vector points in a direction tangent to the circular path. The acceleration is zero. The velocity vector points toward the center of the circular path. The acceleration is zero. The velocity and acceleration vectors point in the...
in which of the below cases does an object slow down: A. the velocity and acceleration...
in which of the below cases does an object slow down: A. the velocity and acceleration vectors point in opposite directions B. the acceleration is negative C. the slope in the velocity-vs-time graph is negative D. velocity and acceleration vector point in the same direction E. the acceleration is positive
An object moves in a circular path with constant angular speed. Compare the direction of the...
An object moves in a circular path with constant angular speed. Compare the direction of the object's tangential velocity vector to its centripetal acceleration vector. A) Both vectors point in the same direction B) The vectors point in opposite directions C) The vectors are perpendicular D) Impossible. The acceleration is zero. Two objects with masses m1 and m2 are original a distance r apart. The magnitude of the gravitational force between them is F. if BOTH masses are doubled, and...
Highest point (same instant on uphill and downhill figures) Uphill Downhill Acceleration in one dimension ech...
Highest point (same instant on uphill and downhill figures) Uphill Downhill Acceleration in one dimension ech -14 3. Describe the motion of an object: for which the direction of the acceleration is the same as the direction of motion of the o a. b. for which the direction of the acceleration is opposite to the direction of motion of th for which the direction of the c. for which the change in velocity is zero. d. for which the initial...
with reason please. Velocity and Acceleration Vectors An object is moving with an initial velocity along...
with reason please.
Velocity and Acceleration Vectors An object is moving with an initial velocity along the x-axis and a constant acceleration in the second quadrant of the x-y plane as shown. Which one of the following statements about the subsequent motion of the object is true? (a) The velocity of the object never changes magnitude. (b) The velocity of the object never changes direction. (c) The direction of the velocity of the object is never the same as that...
127) What is the final velocity of the sled at t-8 seconds? a) 2 m/s b)...
127) What is the final velocity of the sled at t-8 seconds? a) 2 m/s b) 8 m/s c 12 m/s d) 6m/s e) None of the above 128) What is the acceleration of the sled during this time? a) 6 m/s2 b) 2 m/s2 c) 4 m/s2 d) 8 m/s2 e) None of the above 129) A man runs around a circular track of diameter 2 meters. If he runs 2 complete laps, what is the total displacement of...
6.) Given the following v vs t graph for some object, the object at some velocity...
6.) Given the following v vs t graph for some object, the object
at some velocity in the +x direction. After 3.8 seconds it stops,
at 7.6 seconds it changes acceleration, and after 10 seconds, it is
stopped again. (Note that from 0 s until 7.6 seconds, the
acceleration is the same.) From 0 until 10 seconds, the average
speed of the object is 28 m/s. What is the acceleration from 0 to
7.6 seconds in m/s2? If in the...
1 At the instant shown, determine velocity and a-2 rad/s acceleration vectors of point A. Use...
1 At the instant shown, determine velocity and a-2 rad/s acceleration vectors of point A. Use the coordinate system given. a= 5 rad/s2 0.7 m L-x 18° 120° 0.3 m
c. It has tangential (linear) acceleration that points in the same direction as the velocity, and...
c. It has tangential (linear) acceleration that points in the same direction as the velocity, and a decreasing centripetal acceleration d. It has tangential (linear) acceleration that point opposite the velosity, and a constant centripetal acceleration QUESTION 3 A 53.5 kg parachutist jumps from an airplane and falls to Earth with a drag force proportional to the square of the speed, R-CV. Take C -0.220 kg/m (with the parachute closed) and C - 22.0 kg/m (with the chute open). What...
Find magnitude of velocity and acceleration at t=1 Part A Learning Goal To be able to calculate position, velocity, and...
Find magnitude of velocity and acceleration at
t=1
Part A Learning Goal To be able to calculate position, velocity, and acceleration of an object in curvilinear motion using a rectangular coordinate system. A car drives on a curved road that goes down a hill. The car's position is defined by the position vector An object's motion can be described along a path represented by a fixed x, y, z coordinate system. In such a system, the position vector, r, is...
Highest point (same instant on uphill and downhill figures) Uphill Downhill Acceleration in one dimension ech -14 3. Describe the motion of an object: for which the direction of the acceleration is the same as the direction of motion of the o a. b. for which the direction of the acceleration is opposite to the direction of motion of th for which the direction of the c. for which the change in velocity is zero. d. for which the initial...
with reason please.
Velocity and Acceleration Vectors An object is moving with an initial velocity along the x-axis and a constant acceleration in the second quadrant of the x-y plane as shown. Which one of the following statements about the subsequent motion of the object is true? (a) The velocity of the object never changes magnitude. (b) The velocity of the object never changes direction. (c) The direction of the velocity of the object is never the same as that...
127) What is the final velocity of the sled at t-8 seconds? a) 2 m/s b) 8 m/s c 12 m/s d) 6m/s e) None of the above 128) What is the acceleration of the sled during this time? a) 6 m/s2 b) 2 m/s2 c) 4 m/s2 d) 8 m/s2 e) None of the above 129) A man runs around a circular track of diameter 2 meters. If he runs 2 complete laps, what is the total displacement of...
6.) Given the following v vs t graph for some object, the object
at some velocity in the +x direction. After 3.8 seconds it stops,
at 7.6 seconds it changes acceleration, and after 10 seconds, it is
stopped again. (Note that from 0 s until 7.6 seconds, the
acceleration is the same.) From 0 until 10 seconds, the average
speed of the object is 28 m/s. What is the acceleration from 0 to
7.6 seconds in m/s2? If in the...
1 At the instant shown, determine velocity and a-2 rad/s acceleration vectors of point A. Use the coordinate system given. a= 5 rad/s2 0.7 m L-x 18° 120° 0.3 m
c. It has tangential (linear) acceleration that points in the same direction as the velocity, and a decreasing centripetal acceleration d. It has tangential (linear) acceleration that point opposite the velosity, and a constant centripetal acceleration QUESTION 3 A 53.5 kg parachutist jumps from an airplane and falls to Earth with a drag force proportional to the square of the speed, R-CV. Take C -0.220 kg/m (with the parachute closed) and C - 22.0 kg/m (with the chute open). What...
Find magnitude of velocity and acceleration at
t=1
Part A Learning Goal To be able to calculate position, velocity, and acceleration of an object in curvilinear motion using a rectangular coordinate system. A car drives on a curved road that goes down a hill. The car's position is defined by the position vector An object's motion can be described along a path represented by a fixed x, y, z coordinate system. In such a system, the position vector, r, is...
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