Braking distance is defined as the distance travelled by a car to stop when the braking system gets activated. A BMW is traveling on a horizontal road with velocity of 90 km/h. Once it brakes, it experiences a braking distance of 45 m. Find the breaking distance from 90 km/h when it is (a) going up a 5° incline, (b) going down a 3% incline (the slope of incline is 0.03). It should be noted that the braking force does not depend on the grade.
Q: A student drove to the university from her home and noted that the odometer reading of her car…
A: Given Data :odometer reading d = 19.5 kmtime taken in this trip t = 20.3 min = 0.3383333…
Q: A student slides a glass of beer down the bar at a local pub (WTs). The height of the bar is 1.36 m.…
A: a) Using kinematic equation, the expression for time is h=ut+12gt2t=2hg The expression for velocity…
Q: A model rocket shot straight upward with an initial velocity of vo = 25 m/s will reach a height of h…
A: Given data: Initial velocity of rocket, vo=25 m/s Height, ht=-4.9t2+25t
Q: A ball is thrown straight up with an initial speed of 32.9 m/s. Find a height (in meters) that the…
A:
Q: Located in Southern France, the Millau Viaduct is the tallest bridge in the world. The highest…
A: Given data: Initial velocity (u) = 0 m/s Height (h) = 343 m Required: The time taken (t)
Q: A nickle is dropped from a hot-air balloon that is 320 m above the ground and rising vertically at…
A: At the maximum height, the velocity is zero,
Q: An object of mass 20 kg is released from rest and allowed to fall under the influence of gravity.…
A: The objective of the question is to find out the time it will take for an object to reach the ground…
Q: The Kingda Ka roller coaster in New Jersey is the world's tallest ride of its kind. As the passenger…
A: Given : Initial speed =0 m/s Final speed = 57 m/s Time taken to attain final speed = 3.5 s mass of a…
Q: If a ball is thrown directly upwards with 4.6 x the initial speed of another ball, what is the ratio…
A:
Q: A cab driver heads south with a steady speed of v- 24.0 m/s for t, 3.00 min, then makes a right turn…
A: Given: v1=24.0m/st1=3.00 minv2=25.0 m/st2=2.40…
Q: A squirrel runs straight off a tree branch and allows itself to go into freefall. If the branch is…
A:
Q: Make a motion chart for a cannonball launched with an initial speed of 50m/s. Neglect drag and the…
A:
Q: The Kingda Ka roller coaster in New Jersey is the world's tallest ride of its kind. As the passenger…
A: The acceleration is given as a=v-ut…
Q: Mars has an average acceleration due to gravity of 3.72 m/s2. Find the value of acceleration due to…
A: Planets have a considerable amount of mass and thus a considerable amount of gravity. Any object…
Q: The Kingda Ka roller coaster in New Jersey is the world's tallest ride of its kind. As the passenger…
A: The acceleration is given as a=v-ut…
Q: An airplane is flying straight and level at a constant speed vo when it starts climbing along a path…
A: We have given y = h + βx3 where β=0.05×10-3m-2 so we get y=h+(0.05)10-3x3slop is…
Q: A projectile is launched vertically upward with initial velocity v0. Assume that the resistance of…
A:
Q: An object of mass 20 kg is released from rest and allowed to fall under the influence of gravity.…
A: Write the given values to the suitable variables.Here, , and are the mass, air resistance force,…
Q: A bullet is shot horizontally with an initial speed of 899 m/s at a target 183 m away. How far,…
A:
Q: A cab driver heads south with a steady speed of v, = 24.0 m/s for t, = 3.00 min, then makes a right…
A: For such problems to solve efficiently, it's very important to draw the pictorial representation of…
Q: You must use kinetics (F=ma). A car stops over a distance of 49.7 m from a ve
A: On ground,The distance over which car stops, The…
Q: A ball is thrown from a rooftop with an initial downward velocity of magnitude vo = 1.9 m/s. The…
A: In the problem, it is mentioned that upward direction is taken as positive and downward direction as…
Q: Consider a grey squirrel falling from a tree to the ground. Use a coordinate system in which…
A: The squirrel starts its fall from a height of 1.3 m above the ground. This squirrel falls under the…
Q: Braking distance is defined as the distance travelled by a car to stop when the braking system gets…
A:
Q: Problem 2: An object is thrown off the top of a 38-m tall building with a velocity of 350 m/s at an…
A: Part (a) Using equation of kinematics, h+vyt-12gt2=0h+usinθt-12gt2=038+350sin8.2ot-4.9t2=0t=10.9 s
Step by step
Solved in 3 steps with 3 images
- In order to save Gwen Stacy from falling, Spider Man falls freely on top of a tower with distance h from the ground. If after 2 s he falls a distance that is 1/5 the height of the tower, find the height of the tower.please i need the full answer with the stepsAn airplane flies horizontally at a speed of 535 km/h and drops a crate that falls to the horizontal ground below. Neglect air resistance. If the altitude of the plane was 728m, then how far in meters did the crate move as it fell to the ground?
- A chauffeur heads south with a steady speed of v, = 22.0 m/s for t, = 3.00 min, then makes a right turn and travels at v, = 25.0 m/s for t, = 2.40 min, and then drives northwest at v, = 30.0 m/s for t, = 1.00 min. For this 6.40-min trip, calculate the following. Assume +x is in the eastward direction. (a) total vector displacement (Enter the magnitude in m and the direction in degrees south of west.) magnitude direction ° south of west (b) average speed (in m/s) m/s (c) average velocity (Enter the magnitude in m/s and the direction in degrees south of west.) magnitude m/s direction o south of westInfluenced by the gravitational pull of a distant star, the velocity of an asteroid changes from from +20.7 km/s to −19.1 km/s over a period of 2.19 years. (a) What is the total change in the asteroid's velocity? (Indicate the direction with the sign of your answer.) (b) What is the asteroid's average acceleration during this interval? (Indicate the direction with the sign of your answer.)A graph of v(t) is shown for a world-class track sprinter in a 100-m race. (See figure below). Runner Velocity vs. Time Velocity (m/s) 14 12 2086 2 0 2 6 Time (s) 8 10 12 (a) What is his average velocity (in m/s) for the first 4 s? m/s (b) What is his instantaneous velocity (in m/s) at t = 6 s? m/s (c) What is his average acceleration (in m/s²) between 0 and 4 s? m/s² (d) What is his time (in s) for the race? S
- Tolerance is -+1 to the 3rd significant digitA missile silo is used to launch military rockets vertically upward out of the silo, giving the rocket an initial speed of 79.6 m/s at ground level. As the rocket clears the silo, the engines fire, and the rocket accelerates upward at 3.90 m/s2 until it reaches an altitude of 1,080 m. At that point its engines fail, and the rocket goes into free fall, with an acceleration of -9.80 m/s². (You will need to consider the motion while the engine is operating and the free-fall motion separately. Due to the nature of this problem, do not use rounded intermediate values in your calculations-including answers submitted in WebAssign.) (a) Determine the velocity of the rocket (in m/s) at the end of the engine burn time and also the burn time (in s). (For the velocity, indicate the direction with the sign of your answer.) velocity at end of engine V = 92.22 Check your kinematic equation relating vo, V1, ay, and AYo → 1 (where velocity of rocket as it clears the silo, v, = velocity of the rocket at…A boxer's fist and glove have a mass of m = 1.04 kg. The boxer's fist can obtain a speed of v = 9.25 m/s in a time of t = 0.21 s. Write a symbolic expression for the magnitude of the average acceleration, aave, of the boxer's fist, in terms of the variables provided. Find the magnitude of the average acceleration, aave, in meters per square second. Write an expression for the magnitude of the average net force, Fb, that the boxer must apply to his fist to achieve the given velocity. (Write the expression in terms of m, v and t.) What is the numerical value of Fb, in newtons?
- The Kingda Ka roller coaster in New Jersey is the world's tallest ride of its kind. As the passenger cars are launched from rest at the start, they are accelerated uniformly to a speed of 57 m/s (128 mph) in just 3.5 s. (Assume the cars are launched in the positive horizontal direction. Indicate the direction with the sign of your answer where appropriate.) (a) What is the acceleration experienced by passengers on this ride in m/s2? m/s2What is the acceleration experienced by passengers on this ride in g's? g(b) If a certain passenger has a mass of 73 kg, what is the force in newtons that acts on him during the launch phase of this ride? NWhat is the force in pounds that acts on him during the launch phase of this ride? lbSuppose a chinook salmon needs to jump a waterfall that is 1.44 m high. (a) If the fish starts from a distance 1.07 m from the base of the ledge over which the waterfall flows, find the x- and y-components of the initial velocity the salmon would need to just reach the ledge at the top of its trajectory. v0x = ? m/s v0y = ? m/sA golfer launches a tee shot down a horizontal fairway and it follows a path given by r(t) = (at, (85-0.1a)t, - 5t² +60t), where t≥0 measures time in seconds and r has units of feet. The y-axis points straight down the fairway and the z-axis points vertically upward. The parameter a is the slice factor that determines how much the shot deviates from a straight path down the fairway. a. With no slice (a = 0), sketch and describe the shot. How far does the ball travel horizontally (the distance between the point the ball leaves the ground and the point where it first strikes the ground)? b. With a slice (a = 0.2), sketch and describe the shot. How far does the ball travel horizontally (along the y-axis)? c. How far does the ball travel horizontally (along the y-axis) with a = 2.5?