A car brand wanted to conduct a car crash test for one of their car models to know how well the vehicle's front will protect its occupant in a crash. Suppose the car model has an acceleration of 15m/s? straight into a rigid barrier with a distance of 200m from the barrier. How fast the car will crash on the barrier?

Q: The potential difference across a cell membrane  is 65 mV. If the thickness of the membrane is 9.0…

A:

Q: A car starts from rest and reaches a velocity of 40 ft/s in 10 seconds.  a.) What is its…

A: Given: Case(1)- Given: Time t=10 s Final velocity v=40 ft/s Since the car starts from rest, its…

Q: A stone is thrown straight up from the edge of a roof, 750 feet above the ground, at a speed of 16…

A:

Q: If a 1000kg cart races down the tracks, what will its velocity be at the bottom of the first hill…

A:

Q: Q20. An object is shot straight up from 10 m above ground level with an initial velocity of vo = 17…

A: Given:The initial height of the object: h=10 mThe initial velocity is given as: v0=17 m/s in the…

Q: A race car starts from a stop to reach the end of a 1000.0 m road in 12.5 seconds. What is the car's…

A:

Q: A car accelerates from rest at 4 m/s2. What is the velocity of the car after 4 seconds? What is the…

A: Write the kinematic equation to find the velocity of the car. vf = u + at vf = 0 + ( 4 m/s2 x 4s )…

Q: a 1400 kilogram car traveling 15 meters per second brakes uniformly to a stop; it takes 6 seconds to…

A: Given, Mass m =1400 Kg Car traveling with speed u= 15 m/s Time t = 6 s final velocity v = 0 m/s (as…

Q: Compute the equivalent capacitance between points A and D in the two circuits below. C12 1 μF C4 1…

A: In the following circuit, we have two different circuit for which we have calculate the resultant…

Q: Jim is trying to improve his speed on the track so he can qualify for the state championship.  As he…

A: The given values are, vi=70 m/min  =70m1 min×60 s1 min  =1.17 m/svf=106m1 min×60 s1 min   =1.77…

Q: a 12kg ball is dropped from rest. How fast is it going once it has fallen 8m? ignore air resistance

A:

Q: You are riding a donkey that gets scared by an earthquake. If the donkey was originally traveling at…

A: Given: The initial velocity of the donkey is 12.5 m/s. The final velocity of the donkey is 13.7 m/s.…

Q: stone is thrown straight up from the edge of a roof, 775 feet abov per second. A. Remembering that…

A:

Q: A car starts moving from idle and accelerates at a rate of 4 m/ s over a distance of 20m. What is…

A:

Q: Jim is driving his car at a speed of 15m m/s and he has to stop for a stop sign if Jim’s brakes can…

A: Given data:  Initial velocity (u) = 15 m/s Acceleration (a) = -5 m/s2 Final velocity (v) = 0 m/s…

Q: A world record was set for the mens 100-m dash in the 2008 Olympic Games in Beijing by usian bolt of…

A:

Q: A car has a constant acceleration as it passes two checkpoints. The time is taken between…

A: Given data The time between the two checkpoints is t=4 s The acceleration of the case is, a=6 m/s2…

Q: A kid riding a bike accelerates at a rate of 6.9 m/s2. The kid accelerates constantly for 12…

A: The given problem can be solved using the following kinematical equations s=ut+12at2v=u+atv2=u2+2ass…

Q: A stone is thrown straight up from the edge of a roof, 850 feet above the ground, at a speed of 14…

A: GivenInitial height of stone=Height of roof from ground ,so=850 ftInitial speed of stone ,u=14 ft/s

Q: 9. If you drop a 4.3 kg rock off the top of a building that is 187 m high, how long will it take to…

A:

Q: An object is thrown straight down from the top of a building that is 31 m high. The objects initial…

A:

Q: help

A:

Q: In class we used the ’How-fast‘ and ’How-far‘ method to determine the speed and distance that an…

A: Given data:  Initial velocity (V0) = 0 m/s Time (t) = 4 seconds Required: Speed of the object when…

Q: a penny was thrown downward off of the top of a 100 m building. The initial velocity of the penny…

A:

Q: S21: A jet lands on an aircraft carrier at a speed of 50 m/s. what is its acceleration if it stops…

A:

Q: A maglev train accelerates at a rate of 4 km/hr/s. Accelerating from rest it can reach its top speed…

A: Given Acceleration of the train is a=4 km/hr/s=4×10003600 m/s2=109 m/s Initial speed of the train is…

Q: A bus is moving on a straight road 10 m/s. It is acceleration at 28 m/s². What will be it's velocity…

A: Given data :                       Acceleration    =     a                      Initial velocity…

Q: A sled slides off the ice at a speed of 4.1 m/s. The sled slows down at a rate of 2.9 m/s². How fast…

A: sled slides off the ice at a speed(initial), u= 4.1 m/s De acceleration=-2.9 m/s2 Distance, S=1.2m

Q: A boy tosses a coin straight up to 2.2 m. Suppose the height when the coin leaves his hand is 1.3 m.…

A: Initial height of the coin in boy's hand = 1.3 m The height of the coin when it tosses = 2.2 m The…

Q: A car, initially at rest, travels 20 m in 2 s with constant acceleration. What is the acceleration.…

A:

Q: Evan is just leaving his house to visit his grandmother. Normally, the trip takes him 25 minutes on…

A: Write the formula for the distance in terms of speed and time when the speed is constant.

Q: A stone is thrown straight up from the edge of a roof, 875 feet above the ground, at a speed of 16…

A: Given data: Height of roof from ground level h = 875 ft Initial speed for stone u = 16 ft/s Time t =…

Q: A maglev train accelerates at a rate of 5 km/hr/s. Accelerating from rest it can reach its top speed…

A:

Q: A stone is thrown straight up from the edge of a roof, 975 feet above the ground, at a speed of 14…

A:

Q: A stone is thrown stright up from the edge of a roof, 775 feet above the ground, at the speed of 20…

A:

Q: What is the sign of the accelerations of the cart (in the x direction) the instant it reaches its…

A: At maximum height vf  will be zero. Given s=4m vi=5m/s vf = 0m/s Apply Equation of Motion…

Q: A paperclip falls to the ground for 8.36 seconds. What is the speed of the paperclip just before it…

A:

Q: A motorcycle rider speeds off a 20-meter-high cliff. How fast must the driver leave the cliff to…

A: Given data: Height of the cliff y =- 20.0 m Height of the cliff from the ground x =100 m

Q: A car is going 29.0 m/s when it begins to slow and comes to a stop in 100 meters. What was the…

A: Given data:  Initial velocity (u) = 29.0 m/s Final velocity (v) = 0 m/s Distance (d) = 100 m…

Q: A football player is running at +3 m/s. Four seconds later, the player is traveling at +1 m/s. What…

A: Given u=3 m/s (initial velocity) v=1 m/s (final velocity) t=4 s (time interval) we need to find the…

Q: A rubber ball rebounds to 0.72 of the height from which it has dropped. It is first dropped from a…

A: The initial height of the ball is h = 6 m and the ball rebounds to 0.72 of the height from which it…

Q: A kid riding a bike accelerates at a rate of 6.9 m/s2. The kid accelerates constantly for 12…

A:

Q: A car starts from rest and accelerates for 10 seconds at 3.5 m/s2. What is its final velocity?

A: Using equation of kinematics, vf=vi+at

Units and Dimensions

These are generally defined as the terms which precede or describes the dimensions further. These are also further divided into two parts namely fundamental units and the derived units.