The cart shown below moves across the table top as the block falls. What is the acceleration of the cart? Neglect friction and assume the following data: m₁ = 1.8 kg, m2 = 3.2 kg, I = 0.5 kg m2, and r = 21 cm. (Enter the magnitude in m/s².) m2 1, r m1

The acceleration of an object due to air resistance is a = -bư/m, where v is the %3D speed of the object and m is its mass. What are the SI units of b? O kg/s O kg/s? O kg/m kg/m? O kg - m/s? none of these

The mass of an ear ring is 950 mg. Express this mass in Sl unit. 1. (a) 9.50 x 106 kg (b) 9.50 x 104 kg (c) 9.50 x 103 g (d) 9.50 x 101 g A 16 g steel ball and a 10 g nylon ball are dropped from the same height at the same time. As the ball 2. reaches the ground, which of the following quantity is not the same for both the balls? |(a) Displacement (b) Velocity (c) Acceleration (d) Weight. A boy pulls a table to the left with a force of 25 N. A second boy pulls the same table to the right with 3. a force of 15 N. What is the resultant force acting on the table? (a) 10 N right (b) 10 N left (c) 40 N right (d) 40 N left A driver accelerates his car and raises its speed from 40 km/h to 80 km/h. The kinetic energy of the 4. car becomes; (a) 2 times (b) 4 times (c) half (d) same The diameter of an optical fiber is 6.0 nm. Its radius in m is 5. (a) 12.0 x 106 m (b) 12.0 x 10° m (c) 3.0 x 106 m (d) 3.0 x 10° m. A swimmer completes the first 50 m of the 100-m free style in 37.8 s. On reaching…

Two blocks are connected by a (massless) string that runs over a (massless, frictionless) pulley as shown. Assume there is no friction between block 1 and the surface of the incline. 40° 2 If m₁ = 3.9 kg and m₂ = 5.9 kg, what is the tension in the string? Express your answer in N, to at least one digit after the decimal point.

Your forehead can withstand a force of about 6.0 kN before fracturing, while your cheekbone can only withstand about 1.3 kN. If a 140g baseball strikes your head at 30 m/s and stops in 0.0015 seconds, what is the magnitude of the balls deceleration? Express your answer in meters per second squared

The muzzle velocity of a typical 500 g spud is 25 m/s . The force given by the spud is K/(x+.09) where x is the distance of the barrel in meters. If the length of the barrel is 75 cm, what is the constant K? What is the force on the spud?

The acceleration of an object moving through a viscous fluid (like honey) is a = -bv / m, where v is the speed of the object and m is its mass. What are the SI units of b? kg /s O kg /s² kg / m kg / m? kg / m·s none of these

Question Completion Status: QUESTION 3 Use the following equation and table to plot a linear graph (x vs. m) , mg= kx lo = 27.0 cm m (g) (cm) 30.7 50 100 34.4 150 38.1 200 41.8 250 45.4 Where g is the acceleration due to gravity (g = 9.81 m/s2), The slope of the graph = and the slope unit is The slope of the graph represents The spring constant (k) = and the spring constant unit is Click Save and Submit to sare end submit. Click Save All Ansuers to sae all answers

In the figures, the masses are hung from an elevator ceiling. Assume the velocity of the elevator is constant. Find the tensions in the ropes (in N) for each case. Note 5.00 kg, and m₂ 10.0 kg. (Due to the nature of this problem, do not use rounded intermediate values in your that 0₁ = 38.0°, 0₂ = 52.0°, 03 = 61.0⁰, m₁ 1 calculations including answers submitted in WebAssign.) (a) (b) T₁ らら T₂ T3 T₁ T₂ T3 = || || = = = = = T₁ 0₁ 103 m₂ T₁ T3 z z z N N N T₂ N z z z N T3 0₂ T₂ m₁ = =

The figure above shows two objects connected by a rope over a pulley. Assume the pulley is frictionless and has no mass. If m1 is 6 kg and m2 is 10.7 kg, what is the magnitude of the acceleration (in m/s2)?