To become airborne a 2.0-g grasshopper requires a takeoff speed of 2.7 m/s. It acquires this speed by extending its hind legs through a distance of 3.7 cm. What is the average acceleration of the grasshopper?
a) 0 m/s^2
b)9.8 m/s^2
c)36.5 m/s^2
d)98.5 m/s^2
e) none of the choices
To become airborne a 2.0-g grasshopper requires a takeoff speed of 2.7 m/s. It acquires this...
To become airborne a 2.0-g grasshopper requires a takeoff speed of 2.7 m/s. It acquires this speed by extending its hind legs through a distance of 3.7 cm. Find the magnitude of the average net force exerted on the grasshopper by its hind legs during takeoff? a) 0N b) 0.02 N c) 0.11 N d) 0.22 N
An airplane reaches its takeoff speed of 60 m/s with constant acceleration in 30 s, starting from rest. The time it takes to go from 40 m/s to 60 m / s is: A car starts moving from rest with an acceleration of 0.40 m/ s2. A minute later the acceleration stops, and the car moves with constant speed for 5.0 minutes. The car's brakes are finally applied and stops in 2.0 minutes slowing evenly. The total distance traveled by...
6) Ideal incompressible fluid flows through a 4.0-cm-diameter pipe at 1.0 m/s. There is a 2.0 c diameter constriction in the line. What is the speed of the fluid in this constriction? A) 4.0 m/s B) None of the Choices C) 2.0 m/s D) 0.25 m/s E) 0.50 m/s
The figure below shows a
proton entering a parallel-plate capacitor with a speed of 2.20×105
m/s. The proton travels a horizontal distance x = 7.20 cm through
the essentially uniform electric field. The electric field of the
capacitor has deflected the proton downward by a distance of d =
0.760 cm at the point where the proton exits the capacitor. (You
can neglect the effects of gravity.) capacitor.png Using
kinematics, find the vertical acceleration (including sign) of the
proton in...
As the electrons are accelerated through the second anode, the gain in kinetic energy is 2.0 x 10-15 J, and the speed of the electrons as they enter the region between the plates is 6.6 x 107 m/s. The electrons are moving to the right as they pass between the plates. The plates are 2.0 cm long, 1.0 mm apart, and as the electrons pass between the plates, the potential difference is 450 V. Determine the time it takes to...
You have two balls. The 300 g ball rolls off the counter landing 2 m out from the counter. The 150 g ball rolls off the counter with the identical speed as the first ball. What distance does the second ball land out from the counter? A.<1m B. 1 m C. Between 1 m and 2 m D. 2 m E. Between 2 m and 4 m F. 4 m 4(a). A projectile is launched horizontally from a 73-m-high cliff...
Version 1 0.) Red light propagates through window glass at a speed of 2.0 x 10 m/s. This means that bli light must propagate through vacuum at a speed of: A) 1.5 x 10 m/s B) 2.0 x 10 m/s C) 2.5 x 10 m/s D) 3.0 x 10 m/s E) No way to know with the information given, but it must be <3.0 x 10 m/s A screen red, yellow, blue glass 7.) Red, yellow, and blue light along...
1. A pole is held vertically by attaching wires at a height of 13.4 m above the ground. The other end of each wire is anchored in the ground at a distance of 9.54 m from the base of the pole. The pole makes a right angle with the ground. What is the length of each wire? 2. A bug crawls 2.25 m along the base of a wall. Upon reaching a corner, the bug's direction of travel changes from...
When you walk at an average speed of 4 m/s, is 5s you'll cover a distance of A) 20 m. B) 2 m. C) 15 m. D) 10 m. An archer shoots an arrow. Consider the action forcer to be the bowstring against the arrow. The reaction to this force is A) combined weight of the arrow and bowstring B) arrow's push against the bowstring. C) friction of the ground against the archer's feet. D) grip of the archer's hand...