An object has a velocity of (5.4 m/s)i -(4.8 m/s)j. Over a period of 1.3 s, its velocity changes to (1.7 m/s)i + (5.9 m/s)j. What is its acceleration? Group of answer choices   a) -(3.7 m/s)i +(11 m/s)j b) -(2.8 m/s)i+(8.2 m/s)j c) (3.7 m/s)i+(11m/s)j d) (2.8 m/s)i+(8.2 m/s)j e) -(2.8 m/s)i+(1.1 m/s)j

Q: 18. A car starts from rest and travels in a straight line with a constant acceleration of 7.00…

A: The acceleration of the car,

Q: A rocket is launched with an acceleration given by a(t)=2tj, where t is time in seconds. Find the…

A: Since acceleration is only in 'y' direction => ax = 0 => vx = v0x = 5 m/s Now for motion in y…

Q: 41. Average velocity. In t seconds, an object dropped from a certain height will fall s(t) feet,…

A: Given Data: The height is given by, st=16t2. (a) The values of s(5) and s(3) can be calculated as,…

Q: find the average velocity between 1s and 6.5 s. possible answers: a.-0.73 m/s b.+1.4 m/s c.+0.73 m/s…

A: Initial time,  Final time,  Position at 1s,  Position at 6.5s,

Q: The acceleration of a particle along an x axis is a = 6.2t, with t in seconds and a in meters per…

A:

Q: At an absolute pressure of 0.25 N/mm2 and 25 deg C, a gas weighs 16 N/m3. Determine the density and…

A: Given Data: Pressure (P) = 0.25 N/mm2 Temperature (T) = 25 0C = 25 + 273 = 298 K Weight density (γ)…

Q: In m/s?, what is the acceleration when t = 7.5 sec? Express your answer as an integer, not as a…

A: The acceleration at a time in velocity-time graph represents the at that time.

Q: Based on the velocity vs time graph shown, the object's displacement from t = 0 to t = 4 is: Vx…

A: Given data: The velocity vs time graph Required: The object's displacement from t=0s to 4s

Q: 5. In 5.0 s, a particle moving with constant acceleration along the x axis goes from x = 20 m to x =…

A:

Q: The position of a particle is 7 (t) = (4t"a+ 6y – 2t£) m. a. Determine its velocity and acceleration…

A: r(t) = 4t2i + 6j - 2tk m

Q: The position vector of a particle is given by r (t+1)1 + (t°+1)} m, where t is measured in s. What…

A:

Q: A plot of position versus time is shown below for an object in linear motion. (a) What are the…

A: Given: From Graph, Position at A= 1.0 m Time at A=1.0 s Position at B= 1.0 m Time at B=1.0 s…

Q: A racecar starts from rest and accelerates along a straight track. After 11.0 seconds its velocity…

A:

Q: In coming to a stop, a car leaves skid marks acceleration of -7.0 m/s². A. Find the initial velocity…

A: Distance = S = 80 m final velocity = V f = 0 ( stop) acceleration= a = -7 m/s2

Q: Below figure gives the acceleration a versus timet for a particle moving along an x axis. The…

A:

Q: The velocity of an object as a function of time is given by v(t) = b + ct - et², where v and t are…

A: Data we have v(t)=b+ct-et2 To find instantaneous acceleration when t=0.63s

Q: The position of a particular particle as a function of time is given by r = (9.60t i + 8.85 j 1.00…

A:

Q: An object has a displacement s at time t given by the equation: s = 5√t - 3t^3. What is the…

A:

Q: The graph of the velocity versus time for an object is as shown.: Au 2 3 103 5 0 -5 -10- t(s) 5 6 a.…

A:

Q: 2. A dog named Lassie goes this way, then that way: First she runs east at 4.50 m/s for 20 s. Then…

A: Solution: Lassie runs east at 4.50 m/s for t1 = 20 s, so the displacement made by her is And she…

Q: A bird is flying due east. Its distance from a tall building is given by x(t) = 28 m+ (12.4) t-…

A:

Q: a ball is thrown straight up.  what is the velocity and acceleration of the ball at the highest…

A:

Q: Bob is walking along an abandoned railroad track. He starts walking when his position is r = 3.45 m…

A: Displacement of any object/body is defined as the difference between its initial position and final…

Q: A particle has a displacement given by the equation x(t) = 3.0 + 2.0t, where x is in meters and t is…

A:

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –