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Q. A car is traveling 23 m/s when the driver sees a child standing on the road. He takes 0.8 s to react, then steps on the brakes and slows at 6.5 m/s2. How far does the car go before it stops?
Q. An advertisement claims that a sportscar can accelerate from rest to 100 km/hr in 7.70 s. What is its acceleration (in meters/second^2)?
Sally travels by car from one city to another. She drives for 24 min at 63.0 km/h, 52.0 min at 42.0 km/h, and 18.0 min at 81.0 km/h, and she spends 5 min eating lunch and buying gas.
Find out , the magnitude of the force each plate experiences due to the other plate as a function of , the potential drop across the capacitor.
At what position is the third bead in equilibrium? Can it be in stable equilibrium.
Physics 1401 problems about rotational motion and angular displacement and angular velocity and angular acceleration about height problems.
Introductory Mechanics: Calculate the smallest coefficient of static friction
At what rate is the flywheel spinning while the power comes back on. How long after the beginning of the power failure would it have taken the flywheel to stop if the power had not come back on.
A person exerts a horizontal force of F = 169N in the test apparatus. (h = 0.32m.) Find the horizontal force M that his flexor muscle exerts on his fore arm.
A 30-06 caliber hunting rifle fires a bullet of mass 0.0146 kg with the velocity of 314 m/s to the right. The rifle has a mass of 2.49 kg.
A 36 g ball is fired horizontally with initial speed v_0 toward a 110 g ball that is hanging motionless from a 1.1 m-long string. The balls undergo a head-on, perfectly elastic collision, after which 110 g ball swings out to a maximum angle theta_..
The cubit is an ancient unit. Its length equals six palms. (A palm varies from 2.50 to 3.50 inches depending on the individual.) We are told Noah's ark was 300 cubits long, 50 cubits wide and 30 cubits high.
Calculate the energy in of a photon of radiation. A projectile is fired straight upward at 141 m/s. How fast is it moving at the the top of its trajectory? assume it is launched upward at 45 degrees about the horizontal plane. How fast is it moving..
What mass (in grams) of steam at 100 °C must be mixed with 287g of ice at its melting point, in a thermally insulated container, to produce liquid water at 65°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, an..
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