If the final velocity of an object is less than its initial velocity, then a. its acceleration will be negative b. cannot be predicted c. its acceleration will be positive  d. its acceleration will be zero

Q: The acceleration of a particle moving along a straight line is a = √s, where s is in meters. If its…

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Q: Would an object dropped three times from the same height would hit the ground at the same time?

A: Since, for a freely falling body which is dropped from height(h) and takes time(t) to reach the…

Q: The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows…

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Q: In Physics, an object thrown vertically upward will always start to descend once it reaches its…

A: Given data: Initial speed is, v0. Acceleration due to gravity is, g=a2.

Q: A car is initially travelling at a 50.0km/h. The brakes are applied and the car stops over a…

A: vi=50 km/h=50×10003600=13.889 m/svi=0 m/sx=35 m

Q: A motorist is about to enter the exit ramp of a highway. When it is 50 m before reaching A (along…

A: Given, Radius,r=100 m Retardation,a=-0.5 m/s2 Initial speed,u=80 km/h=22.22 m/s Distance from A,d=50…

Q: A vehicle accelerates uniformly from rest to a speed of 25 ms in 100 s along a straight road. It…

A: The first equation of motion is  v = u + at  where, u is the initial velocity, v is the final…

Q: 4- A juggler throws a bowling pin straight up in the air. After the pin leaves his hand and while it…

A: Given A juggler throws a bowling pin straight up in the air.

Q: At the instant a traffic light turns green, a car that has been waiting at the intersection starts…

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Q: 47. A baseball is hit so that it travels straight upward after be- ing struck by the bat. A fan…

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Q: 3. The velocity of an object is proportional to elapsed time (a) always, (b) only for positive…

A: The expression that relates the velocity with acceleration is given by, ∆v=at On when the…

Q: A trekker walks 5.0 km North [N] and then 8.0 km South [S] for 3.0 hours. s Appraise Determine the…

A: Given data: Trekker walks 5.0 km, towards North [N] Then 8.0 km, towards South [S] Time (t) = 3.0…

Q: 4. Given km/hr to 20.0 km/hr in 6.00 seconds. A vehicle changes velocity from 80.0 Required: Find…

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Q: 2. A bike accelerates uniformly from rest to a speed of 7.10 m/s over a distance of 35.4 m.…

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Q: Assume that an intercontinental ballistic missile goes from rest to a suborbital speed of 6.50 km/s…

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Q: A Cessna 150 airplane has a takeoff speed of 34.8 m/s. Determine the minimum length of the runway…

A: Newton’s equation of motion is,

Q: A hot-air balloon is rising upward with a constant speed of 3.500m/s. When the balloon is 14m above…

A: The constant speed of hot air balloon which is rising up V=3.5 m/s, height from which object is…

Q: The hare is sleeping at a location that is 1200 m from the finish line. The tortoise passes him at a…

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Q: a-An airplane accelerates down a runway at 3.20 m/s' for 32.8 s until is finally lifts off the…

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Q: An object moves at a constant speed of 6 m/s. This means that the object Has a positive acceleration…

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Q: 18. If the acceleration of an object is zero, the object cannot be moving. True O False

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: a train increases its speed steadily from 10 m/s to 20 m/s in 1 minute. what is its average speed…

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Q: The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows…

A: Given:-the car Acceleration =-5.25 ms2  for a time t=4.40 s car making straight skid marks 64.4 m…

Q: An automobile is traveling west. Can it have a velocity toward the west and at the same time have an…

A: An automobile is traveling west

Q: 4.) A ball is thrown upward, with an initial speed of 10m/s, from the top of a 25-m tall school…

A: Part A.  Given that Initial velocity of ball, V0 = +10 m/s in upward direction Using 1st kinematic…

Q: The acceleration of a particle moving along a straight line is a = Vs, where s is in meters. If its…

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Q: A car speeding at constant speed 160 km/h passes a stationary police car. Upon seeing the speeding…

A: d=ut+0.5at2vcart=ut+0.5at2160 km/hr0.278 m/s1 km/hrt=0 m/st+0.52.00 m/s2t2t=44.5 s

Q: A train runs at 69.14 mph. If a command to stop the train is being sent to the train operator, what…

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Q: a mobile starts up and after 2 minutes of moving along a straight path it acquires a speed of (49i;…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A car travels up a hill at a constant speed of 37 km/h and returns down the hill at a constant speed…

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Q: A galloping horse has a speed of 12 m/s at t= 0. After 50 s its speed is 8 m/s. Calculate the…

A: herev= 8 msu=12 mst=50 s

Q: A car starts from rest accelerating at 2.80 m/s", when a truck traveling by a constant speed of 20.0…

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Q: A jet lands on a runway is brought to stop in 500ft. Find acceleration(ft/s^2) and time required to…

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Q: The speed of a nerve impulse in the human body is about 100 m/s. If you accidentally stub you toe in…

A: Time taken by impulse to reach the brain is,

Q: 3. An object is dropped from a height. a. Describe its velocity as its falls to the ground. b.…

A: (a) When the object is dropped from a height, its initial velocity is zero. Due to gravity acting…

Q: An object has increasing velocity when its acceleration is greater than zero. It has increasing…

A: The velocity of the ball is increasing when its acceleration is greater than zero and the velocity…

Q: A bullet is shot straight up with an initial speed of 180 m/s. How long is the bullet in the air and…

A: Introduction: When the ball fired vertically direction then the acceleration due to gravity will…

Q: 3.The brakes are applied on a car travelling at 30 m/s and stops in 3.0 seconds.Determine the cars…

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Q: A UFO going 55 m/s east suddenly experienced a constant acceleration of 19 m/s² west for 49 s.…

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Q: acceleration of the car

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Q: A vehicle changes velocity from 80.0 4. Given km/hr to 20.0 km/hr in 6.00 seconds. Required: Find…

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Q: A police car accelerates at a constant rate of 4.0 m/s2 from rest.

A: first calculate the velocity then find displacement using Newton's Laws of motion

Q: If an object has an acceleration of 0 m/s, then one can be sure that the object is not changing…

A: Acceleration is the rate of change in Velocity

Q: 3. A person starts pedaling a bicycle from rest, and accelerates uniformly over a time of 7.34…

A: The distance traveled by bicycle is, s=35 m The time taken by bicycle to travel the distance is,…

Q: A speeding car is traveling at a constant 30.0 m/s when it passes a stationary police car. If the…

A: The expression for find time is t+1=dvt=dv-1 Substitute values in the above equation  t=300 m30…

Q: A car moves with a uniform speed of 80kmph for 15 seconds. then it is made to stop in next 16s.…

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Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.