A car drives to the north at constant speed. Which direction does its acceleration point? Explain.
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ANS:- In the given case acceleration will be zero.
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- 3. A car travels along a straight line at a constant speed of 60.0 km/h for a distanced and then another distance d in the same direction at another constant speed. The average velocity for the entire trip is 30.0 km/h. (a) What is the constant speed with which the car moved during the second distance d? (b) Suppose the second distance d were traveled in the opposite direction, because the driver forgot something and had to return home (i). What would be the average velocity for this trip? (ii) What is the average speed for this new trip? 4. A particle is launched in the air with a velocity of 25 m/s at angle of 60° about the horizontal. Find the maximum horizontal range as well as the maximum height reached by the particle 5. The motion of a particle undergoing a uniformly accelerated motion is captured during each 2 seconds. It was observed that during the fourth and the tenth periods, the particle traveled 200 m and 500 m respectively. Determine: The acceleration of the particle 2.…A treasure hunter follows a map moving 25 km [N], 37 km [W 37 degrees S], 63 km [E 65 degrees S] and finally 15 km [N 17 degrees E]. If his average for the entire trip was 45 km/hr, calculate: a. The total time for the trip; and b. The average velocity of the tripYou are standing on a straight stretch of road and watching the motion of a bicycle; you choose your position as the origin. At one instant, the position of the bicycle is negative and its velocity is positive. Is the bicycle getting closer to you or farther away? Explain.
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- Two projectiles are launched from the same point at the same angle, but the first one has twice the initial velocity compared to the second. The ranges R1 and R2 are: O A. R2 = 4R1 O B. R1 = 4R2 OC R2= 2R1 OD R1 = R2 O E None of the above.Question 2: #81 A rocket is launched straight up with constant acceleration. Four seconds after liftoff, a bolt falls off the side of the rocket. The bolt hits the ground 6.0 s later. What was the rocket’s acceleration?12. Which of the following statements is not valid for a projectile? Take upward direction as positive. a. The y component of the velocity of the projectile is zero at the highest point of the projectile's path. b. The x velocity on a projectile is constant at any point on its path if we ignore air resistance. c. The acceleration of the projectile is positive and decreasing when the projectile is moving upwards. d. The acceleration of the projectile is a constant negative value.
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