
R15
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34 questions
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- Q1Which quantities are scalar?distance and accelerationvelocity and forcemomentum and displacementspeed and time120s
- Q2A 3.00-kilogram mass is thrown vertically upward with an initial speed of 9.80 meters per second. What is the maximum height this object will reach? [Neglect friction.]4.9 m9.8 m19.6 m1 m120s
- Q3An airplane traveling north at 220. meters per second encounters a 50.0-meters-per-second crosswind from west to east, as represented in the diagram.170 m/s214 m/s226 m/s270 m/s120s
- Q4A 160.-kilogram space vehicle is traveling along a straight line at a constant speed of 800. meters per second. The magnitude of the net force on the space vehicle is1.6x10^2 N8.0x10^2 N0 N1.28x10^5 N120s
- Q5A student throws a 5.0-newton ball straight up. What is the net force on the ball at its maximum height?9.8 N down0 N5 N down5 N up120s
- Q6A 1.5-kilogram cart initially moves at 2.0 meters per second. It is brought to rest by a constant net force in 0.30 second. What is the magnitude of the net force?0.9 N0.4 N10 N15 N120s
- Q7As a 5.0 × 10^2-newton basketball player jumps from the floor up toward the basket, the magnitude of the force of her feet on the floor is 1.0 × 10^3 newtons. As she jumps, the magnitude of the force of the floor on her feet is1.0 × 10^3 N5.0 × 10^5 N5.0 × 10^2 N1.5 × 10^3 N120s
- Q8A 0.0600-kilogram ball traveling at 60.0 meters per second hits a concrete wall. What speed must a 0.0100-kilogram bullet have in order to hit the wall with the same magnitude of momentum as the ball?360 m/s3.6 m/s600 m/s6 m/s120s
- Q9Which diagram best represents the position of a ball, at equal time intervals, as it falls freely from rest near Earth’s surface?(4)(3)(2)(1)120s
- Q10A different force is applied to each of four different blocks on a frictionless, horizontal surface. In which diagram does the block have the greatest inertia 2.0 seconds after starting from rest?(2)(1)(4)(3)120s
- Q11The diameter of an automobile tire is closest to10^-2 m10^1 m10^2 m10^0 m120s
- Q12Without air resistance, a kicked ball would reach a maximum height of 6.7 meters and land 38 meters away. With air resistance, the ball would travelmore than 6.7 m vertically and less than 38 m horizontally38 m horizontally and less than 6.7 m vertically6.7 m vertically and more than 38 m horizontallyless than 38 m horizontally and less than 6.7 m vertically120s
- Q13A car is moving with a constant speed of 20. meters per second. What total distance does the car travel in 2.0 minutes?10 m2400 m1200 m40 m120s
- Q14A car, initially traveling at 15 meters per second north, accelerates to 25 meters per second north in 4.0 seconds. The magnitude of the average acceleration is10 m/s^220 m/s^26.3 m/s^22.5 m/s^2120s
- Q15An object is in equilibrium. Which force vector diagram could represent the force(s) acting on the object?(3)(2)(4)(1)120s