The front 1.20 m of a 1,450-kg car is designed as a "crumple zone" that collapses to absorb the shock of a collision. (a) If a car traveling 21.0 m/s stops uniformly in 1.20 m, how long does the collision last? (b) What is the magnitude of the average force on the car? (c) What is the magnitude of the acceleration of the car? Express the acceleration as a multiple of the acceleration of gravity.
Q: Suppose a box of mass mm = 5 kg is kicked and given an initial velocity of 5.0 m/s to the right. The…
A:
Q: A bullet is accelerated down the barrel of a gun by hot gases produced in the combustion of gun…
A: Force is defined as the product of mass and acceleration. Acceleration is defined as the rate of…
Q: A force is acting on a block with a magnitude of F = 115 N. The force makes an angle of 0 = 14° with…
A: The free-body diagram of the case can be drawn as follows:Here:Given values:
Q: Seven identical springs are placed side by side (in parallel, like the two springs in the figure),…
A:
Q: A 1060 kg artillery shell is fire from the battleship. While it is in the barrel of the gun, it…
A: Given mass of artillery shell = 1060 kg acceleration of artillery shell = 2.1x104 m/s2 we have to…
Q: A box of mass 11.6 kg is slid along the floor. The initial speed of the box is 1.8 m/s and it comes…
A: According to question--- Given value--- mass m = 11.6 kg. initial speed = 1.8 m/sec . final speed =…
Q: A car of mass 250 kg, is accelerated from rest by a net force of 400 N for 20 s. After this, the…
A: Given: Mass (m) = 250 Kg time (t1 ) = 20 s Force (F1) = 400 N Force (F2) = 100 N
Q: A car traveling at 20 m/s runs into a bridge abutment and crumples for 1.2 m before coming to a full…
A: Given: The intial speed of the car is 20 m/s. The distance traveled by car is 1.2 m. The final speed…
Q: A spring hangs vertically next to a ruler. The end of the spring is next to 15 cm mark on the…
A: Given Data: The mass of spring is, m=2.0 kg The spring constant is, k=51 N/m The expression for…
Q: Flag question Let a and b be two unit vectors. a.(a+ (axb)) (a x b) + (bxa) a. (a x b) ax (a.b)…
A:
Q: n the velocity Av, in meters per second, of the particle between t = 0 and t = 1.3 s.
A:
Q: National Transportation Safety Board indicates that a person in a car crash has a reasonable chance…
A: Given: The mass of the car is 1700 kg. The maximum acceleration of the car is 300 m/s2. The initial…
Q: An out of control car traveling at 95 km/hr locks its brakes and skids in a straight line. If the…
A:
Q: I forgot my car in a no - parking zone. A tow truck pulled it away. The truck exerted a force of…
A: Given data: The force exerted by the truck on the car is F=4000 N The friction force is Ff=600 N…
Q: Which of the following steps would most likely result in lowering the force of a collision? a…
A: By Newton's 2nd law, Force is given by, F=Change in momentumTime=∆pt=m(v-u)t
Q: A crate with a mass of 30 kg rests on a floor. On top of the crate stands a 45-kg girl. What is the…
A:
Q: A biomechanics forensics expert is attempting to determine the events that led to an automobile…
A:
Q: In a study conducted by an Acadia Athletic Therapy researcher, the football team was equipped for an…
A:
Q: A dated box of dates, of mass 7.1 kg, is sent sliding up a frictionless ramp at an angle of θ to the…
A:
Q: The net force on block A equals to 47.4 N, and the mass of block A is 14.5 kg. If at t=0 sec, the…
A: Write the given data with suitable variables. F=47.4 Nm=14.5 kgu=0 m/st=4.8 s Here, F denotes the…
Q: A 0.18- kg block on a wooden table is given a sharp blow with a hammer. The block then slides across…
A: Let m denotes the mass, Fmax denotes the maximum force, t denotes the base of the isosceles…
Q: A 2110 kg car traveling at 8.4 m/s collides with a 2730kg car that is initially at rest at the…
A: Mass of first car = m = 2110 kg Mass of second car = M = 2730 kg Distance traveled = s = 3.3 m…
Q: A tired cyclist on a bicycle (102.0 kg combined) starts with an initial velocity of 15.0 m/s at the…
A:
Q: Trailer truck has a mas of 4 metric tons and is traveling at 75 km/h. The driver then applies the…
A: Given, m = 4000 kg v = 75 km/h = 20.83 m/s t = 6 sec According to Newton's first equation of…
Q: A standard object defined as having a mass of exactly 4.6 kg is given an acceleration of 2.4169 m/s2…
A: Given data: Mass (m1) = 4.6 kg Acceleration (a1 ) = 2.4169 m/s2 Acceleration of unknown object a2 =…
Q: A 7-kg toboggan is kicked on a frozen pond, such that it acquires a speed of 2.1 m/s to the right.…
A: Given Mass of the toboggan is m=7 kg Initial speed of the toboggan is v0=2.1 m/s Final speed of the…
Q: A 1060 kg artillery shell is fired from a battleship. While it is in the barrel of the gun, it…
A: Given data: Mass (m) = 1060 kg Acceleration (a) = 2.1 × 104 m/s2
Q: The driver of a car traveling at a speed of 18 m/s slams on the brakes and comes to a stop in 4 s.…
A: initial speed(u)=18 m/s final speed(v)=0 (finally stopped) time(t)=4s
Q: A ball of mass m is shot straight up into the air with an initial speed Vị.
A:
Q: The acceleration of a particle moving along the 7. x-axis is given by the function a, = -7 ť + 4 t*…
A:
Q: A 5 kg block is given an initial velocity of 10 m/s. If there is a friction force of 13 N opposing…
A:
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- A lump of clay of mass 0.21 kg is dropped from a height of 5.5 m. The clay comes to a full stop 0.071 s after the moment it first touched the ground. What is the magnitude in newtons of the average force of impact that the clay experienced? Express your answer in two decimal places, with units of Newtons.In a performance test, each of two cars takes 8.6 s to accelerate from rest to 26 m/s. Car A has a mass of 1357 kg, and car B has a mass of 1950 kg. Find the net average force that acts on (a) car A and (b) car B during the test. (a) (b)A 2 kg box is pressed against a spring which is compressed 5 cm. If the stiffness of spring is 50 N/m and the coefficient of static friction between the box and table is 0.2, what is the box's acceleration when it is released?
- The Lamborghini Huracan has an initial acceleration of 0.80gg. Its mass, with a driver, is 1510 kg. If an 80 kg passenger rode along, what would the car's acceleration be? Express your answer with the appropriate units.Your answer is partially correct. Flying Circus of Physics A man of mass 71 kg drops to a concrete patio from a window 1.2 m above the patio. He neglects to bend his knees on landing, taking 2.8 cm to stop. (a) What is his average acceleration from when his feet first touch the patio to when he stops? (b) What is the magnitude of the average stopping force exerted on him by the patio? (a) Number (b) Number 420.04 29822.8 Units Units m/s^2 NAn object of mass 12.9 kg enters a rough floor with speed of 10.1 m/s. The coefficient of friction between the floor and the object is 0.30 and the object moves 2.07 m before returning to a smooth surface (frictionless). What is the velocity of the object once it returns to the smooth surface?
- An constant applied force of 40.1 N lifts an 2.50 kg mass straight up, resulting in a final speed of 3.6 m/s. What distance did the mass move if it was initially at rest?Jennifer is walking at 1.22 m/s. If Jennifer weighs 552 N, what is the magnitude of hermomentum?A) 97.0 kg m/sB) 137 kg m/sC) 68.6 kg m/sD) 672 kg m/sE) 951 kg m/sAt an accident scene on a level road, investigators measure a car's skid mark to be 88 m long. It was a rainy day and the coefficient of friction was estimated to be 0.35. a.)Use these data to determine the speed of the car when the driver slammed on (and locked) the brakes. Express your answer to two significant figures and include the appropriate units.
- 2.3. A train car is sitting on a level track when a second car moves in. The second car hits the first, their hitches engage, and they move together. Both cars have equal masses of about 120 000 kg, and the second car initially has a velocity of 1.5 m/s. (a) Draw a diagram that illustrates the situation and include an arrow representing the velocity vector of the second car and a separate arrow representing ĉ, the unit vector for the coordinate system along the tracks. (b) Write vector expressions for both the velocity and momentum of the second car using at least two forms of vector notation that have been covered in class. (c) Just before the collision, what is the velocity of the center of mass of the system that includes both cars? Again, express this as a vector. (d) Just before the collision, what is the total kinetic energy of the system that includes both cars?Following the collision with a tree, the car rapidly decelerates and comes to a full stop in 0.26 seconds. Given that the passenger in the car has a mass of 70.0 kg and experiences a restraining force from the seat belt amounting to 4038 N, what was the car's initial velocity just before the impact with the tree?(a) Find the speed at which Superman (mass=90.0 kg) must fly into a train (mass = 17485 kg) traveling at 65.0 km/hr to stop it. Running into the train at that speed would severely damage both train and passengers. (b) Calculate the minimum time Superman must take to stop the train if the passengers experience an average horizontal force of 0.410 their own weight. (c) How far does the train then travel while being slowed to a stop?